Log Message:
webkit-gtk: Update to 2.22.7

pkgsrc changes:
 - Remove patch-Source_JavaScriptCore_dfg_DFGDoesGC.cpp, it was applied in
   2.22.7

Changes:
2.22.7
======
  - Fix rendering of glyphs in Hebrew (and possibly other languages) when
    Unicode NFC normalization is used.
  - Fix several crashes and race conditions.