[CMake] Add minimum version information for tool dependencies
https://bugs.webkit.org/show_bug.cgi?id=97592

Patch by Laszlo Gombos <l.gombos@samsung.com> on 2013-01-29
Reviewed by Kenneth Rohde Christiansen.

Capture the minimum version information for the tools that are required
to build WebKit for all CMake based build systems.

* CMakeLists.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141157 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Add RenderLayer::enclosingStackingContainer
https://bugs.webkit.org/show_bug.cgi?id=108211

Reviewed by Simon Fraser.

No new tests, no change in functionality.

* rendering/RenderLayer.h:
(WebCore::RenderLayer::enclosingStackingContainer):
  This function is similar to RenderLayer::stackingContainer, but may return the
  layer itself if it's a stacking container.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141159 268f45cc-cd09-0410-ab3c-d52691b4dbfc