https://bugs.webkit.org/show_bug.cgi?id=99033

Reviewed by Martin Robinson.

Source/WebCore: 

Enable the Microdata DOM API, but still disable it when the unstable
features should be disabled (for instance in release builds).

No new tests - related tests are being unskipped and are expected to pass.

* GNUmakefile.am:
* GNUmakefile.features.am:
* bindings/gobject/GNUmakefile.am: Add the required files so the Microdata
API GObject bindings are generated and built.

LayoutTests: 

Unskip the Microdata tests, they all pass now that the feature has been enabled.

* platform/gtk/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@132058 268f45cc-cd09-0410-ab3c-d52691b4dbfc