Cabal revisions of yaml-0.4.1.2

Hackage metadata revisions edit the .cabal file after upload; each diff below is one revision.

 name:            yaml version:         0.4.1.2+x-revision: 1 license:         BSD3 license-file:    LICENSE author:          Michael Snoyman <michael@snoyman.com>, Anton Ageev <antage@gmail.com>,Kirill Simonov  extra-source-files: c/helper.h,                     libyaml/yaml_private.h,                     libyaml/yaml.h,-		    libyaml/LICENSE+            libyaml/LICENSE  flag system-libyaml   description: Use the system-wide libyaml instead of the bundled copy         Buildable: False     else         Buildable: True-    build-depends:   base >= 4 && < 5+    build-depends:   base >= 4 && < 4.7                    , transformers >= 0.1 && < 0.3                    , bytestring >= 0.9.1.4 && < 0.10                    , enumerator >= 0.4 && < 0.5                        , test-framework-hunit                        , HUnit                        , directory-                       , base >= 4 && < 5+                       , base >= 4 && < 4.7                        , transformers >= 0.1 && < 0.3                        , bytestring >= 0.9.1.4 && < 0.10                        , enumerator >= 0.4 && < 0.5

 name:            yaml version:         0.4.1.2-x-revision: 1+x-revision: 2 license:         BSD3 license-file:    LICENSE author:          Michael Snoyman <michael@snoyman.com>, Anton Ageev <antage@gmail.com>,Kirill Simonov  flag nolib   description: Skip building the library   default: False+  manual: True+ flag buildtests   description: Build the executable to run unit tests   default: False+  manual: True  library     if flag(nolib)