[GTK] Versions.m4 is missing some key dependencies version definitions
https://bugs.webkit.org/show_bug.cgi?id=111903

Patch by Martin Robinson <mrobinson@igalia.com> on 2013-03-09
Reviewed by Carlos Garcia Campos.

* Source/autotools/Versions.m4: Add missing required version
definitions.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145307 268f45cc-cd09-0410-ab3c-d52691b4dbfc