[EFL][GTK] Move text selection/focus notification for a11y from gtk to atk directory
https://bugs.webkit.org/show_bug.cgi?id=110221

Patch by Mariusz Grzegorczyk <mariusz.g@samsung.com> on 2013-02-25
Reviewed by Martin Robinson.

Share implementation between efl and gtk.
Update build with changes made.

* GNUmakefile.list.am: Change WebCore/editing/gtk/FrameSelectionGtk.cpp to WebCore/editing/atk/FrameSelectionAtk.cpp to build.
* PlatformEfl.cmake: Add WebCore/editing/atk to include directories, add Webcore/editing/atk/FrameSelectionAtk.cpp to build.
* editing/FrameSelection.h: Omit notifyAccessibilityForSelectionChange() stub for EFL port.
(WebCore):
* editing/atk/FrameSelectionAtk.cpp: Renamed from Source/WebCore/editing/gtk/FrameSelectionGtk.cpp.
(WebCore):
(WebCore::emitTextSelectionChange):
(WebCore::maybeEmitTextFocusChange):
(WebCore::FrameSelection::notifyAccessibilityForSelectionChange):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@143937 268f45cc-cd09-0410-ab3c-d52691b4dbfc