Add some examples for "composer" type repositories.

These can be used as examples or possibly for tests.

doc/fixtures/fixtures.md

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+`Composer` type repository fixtures
+=======================
+
+This directory contains some examples of what `composer` type repositories can look like. They serve as illustrating examples accompanying the docs, but can also be used as (initial) fixtures for tests.
+
+* `repo-composer-plain` is a simple, plain `packages.json` file
+* `repo-composer-with-includes` uses the `includes` mechanism
+* `repo-composer-with-providers` uses the `providers` mechanism
+
+Sample Packages used in these fixtures
+-------
+
+All these repositories contain the following packages.
+
+* `foo/bar` versions 1.0.0, 1.0.1 and 1.1.0; dev-default and 1.0.x-dev branches. On dev-default and in 1.1.0, `bar/baz` ~1.0 is required.
+* `qux/quux` only has a dev-default branch. It `replace`s `gar/nix`.
+

doc/fixtures/repo-composer-plain/packages.json

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+{
+    "packages": {
+        "foo/bar": {
+            "1.0.0": {
+                "name": "foo/bar",
+                "version": "1.0.0",
+                "version_normalized": "1.0.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "249dec95a52a"
+                },
+                "time": "2014-10-11 15:42:00",
+                "type": "library"
+            },
+            "1.0.1": {
+                "name": "foo/bar",
+                "version": "1.0.1",
+                "version_normalized": "1.0.1.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "21e3328295d4"
+                },
+                "time": "2014-10-11 15:45:56",
+                "type": "library"
+            },
+            "1.0.x-dev": {
+                "name": "foo/bar",
+                "version": "1.0.x-dev",
+                "version_normalized": "1.0.9999999.9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "14dc17c8e860"
+                },
+                "time": "2014-10-11 15:45:59",
+                "type": "library"
+            },
+            "1.1.0": {
+                "name": "foo/bar",
+                "version": "1.1.0",
+                "version_normalized": "1.1.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "d2fa3e69ad5b"
+                },
+                "require": {
+                    "bar/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:16",
+                "type": "library"
+            },
+            "dev-default": {
+                "name": "foo/bar",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "8e5a5c224336"
+                },
+                "require": {
+                    "bar/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:18",
+                "type": "library"
+            }
+        },
+        "qux/quux": {
+            "dev-default": {
+                "name": "qux/quux",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "4a10a567baa5"
+                },
+                "replace": {
+                    "gar/nix": "1.0.*"
+                },
+                "time": "2014-10-11 15:48:15",
+                "type": "library"
+            }
+        }
+    }
+}

doc/fixtures/repo-composer-with-includes/include/all$4a06adbb14bcd09b8fc8108e3b46e2d73e4c423e.json

@@ -0,0 +1,89 @@
+{
+    "packages": {
+        "foo/bar": {
+            "1.0.0": {
+                "name": "foo/bar",
+                "version": "1.0.0",
+                "version_normalized": "1.0.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "249dec95a52a"
+                },
+                "time": "2014-10-11 15:42:00",
+                "type": "library"
+            },
+            "1.0.1": {
+                "name": "foo/bar",
+                "version": "1.0.1",
+                "version_normalized": "1.0.1.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "21e3328295d4"
+                },
+                "time": "2014-10-11 15:45:56",
+                "type": "library"
+            },
+            "1.0.x-dev": {
+                "name": "foo/bar",
+                "version": "1.0.x-dev",
+                "version_normalized": "1.0.9999999.9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "14dc17c8e860"
+                },
+                "time": "2014-10-11 15:45:59",
+                "type": "library"
+            },
+            "1.1.0": {
+                "name": "foo/bar",
+                "version": "1.1.0",
+                "version_normalized": "1.1.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "d2fa3e69ad5b"
+                },
+                "require": {
+                    "bar/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:16",
+                "type": "library"
+            },
+            "dev-default": {
+                "name": "foo/bar",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "8e5a5c224336"
+                },
+                "require": {
+                    "bar/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:18",
+                "type": "library"
+            }
+        },
+        "qux/quux": {
+            "dev-default": {
+                "name": "qux/quux",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http://some.where/over/the/rainbow",
+                    "reference": "4a10a567baa5"
+                },
+                "replace": {
+                    "gar/nix": "1.0.*"
+                },
+                "time": "2014-10-11 15:48:15",
+                "type": "library"
+            }
+        }
+    }
+}

doc/fixtures/repo-composer-with-includes/packages.json

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+{
+    "packages": [
+
+    ],
+    "includes": {
+        "include/all$4a06adbb14bcd09b8fc8108e3b46e2d73e4c423e.json": {
+            "sha1": "4a06adbb14bcd09b8fc8108e3b46e2d73e4c423e"
+        }
+    }
+}

doc/fixtures/repo-composer-with-providers/p/foo/bar$fc231cb99b4427d2e6e10e500e3195c9e927eed6628ee1913b8331f97850cc1c.json

@@ -0,0 +1,77 @@
+{
+    "packages": {
+        "foo\/bar": {
+            "1.0.0": {
+                "name": "foo\/bar",
+                "version": "1.0.0",
+                "version_normalized": "1.0.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "249dec95a52a"
+                },
+                "time": "2014-10-11 15:42:00",
+                "type": "library",
+                "uid": 0
+            },
+            "1.0.1": {
+                "name": "foo\/bar",
+                "version": "1.0.1",
+                "version_normalized": "1.0.1.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "21e3328295d4"
+                },
+                "time": "2014-10-11 15:45:56",
+                "type": "library",
+                "uid": 1
+            },
+            "1.0.x-dev": {
+                "name": "foo\/bar",
+                "version": "1.0.x-dev",
+                "version_normalized": "1.0.9999999.9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "14dc17c8e860"
+                },
+                "time": "2014-10-11 15:45:59",
+                "type": "library",
+                "uid": 2
+            },
+            "1.1.0": {
+                "name": "foo\/bar",
+                "version": "1.1.0",
+                "version_normalized": "1.1.0.0",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "d2fa3e69ad5b"
+                },
+                "require": {
+                    "bar\/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:16",
+                "type": "library",
+                "uid": 3
+            },
+            "dev-default": {
+                "name": "foo\/bar",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "8e5a5c224336"
+                },
+                "require": {
+                    "bar\/baz": "~1.0"
+                },
+                "time": "2014-10-11 15:43:18",
+                "type": "library",
+                "uid": 4
+            }
+        }
+    }
+}

doc/fixtures/repo-composer-with-providers/p/provider-active$d0a9908f6006b833fa0b654dc47b23711c60833672056925a868fe5c6af9c9c2.json

@@ -0,0 +1,10 @@
+{
+    "providers": {
+        "foo\/bar": {
+            "sha256": "fc231cb99b4427d2e6e10e500e3195c9e927eed6628ee1913b8331f97850cc1c"
+        },
+        "qux\/quux": {
+            "sha256": "301aa898cc49a14ebe56084431db1e29805d822e2f25f8cbc2985f800c0d6d33"
+        }
+    }
+}

doc/fixtures/repo-composer-with-providers/p/qux/quux$301aa898cc49a14ebe56084431db1e29805d822e2f25f8cbc2985f800c0d6d33.json

@@ -0,0 +1,22 @@
+{
+    "packages": {
+        "qux\/quux": {
+            "dev-default": {
+                "name": "qux\/quux",
+                "version": "dev-default",
+                "version_normalized": "9999999-dev",
+                "source": {
+                    "type": "hg",
+                    "url": "http:\/\/some.where\/over\/the\/rainbow",
+                    "reference": "4a10a567baa5"
+                },
+                "replace": {
+                    "gar\/nix": "1.0.*"
+                },
+                "time": "2014-10-11 15:48:15",
+                "type": "library",
+                "uid": 5
+            }
+        }
+    }
+}

doc/fixtures/repo-composer-with-providers/packages.json

@@ -0,0 +1,9 @@
+{
+    "packages": [],
+    "providers-url": "\/p\/%package%$%hash%.json",
+    "provider-includes": {
+        "p\/provider-active$d0a9908f6006b833fa0b654dc47b23711c60833672056925a868fe5c6af9c9c2.json": {
+            "sha256": "d0a9908f6006b833fa0b654dc47b23711c60833672056925a868fe5c6af9c9c2"
+        }
+    }
+}