[EFL] Enable scaled cursors
https://bugs.webkit.org/show_bug.cgi?id=106242

Reviewed by Gyuyoung Kim.

.:

Enable MOUSE_CURSOR_SCALE flag for EFL port.

* Source/cmake/OptionsEfl.cmake:
* Source/cmake/WebKitFeatures.cmake:

Source/WebCore:

Correctly copy WebCore::Cursor's m_imageScaleFactor
member in CursorEfl.cpp when MOUSE_CURSOR_SCALE is
enabled.

No new tests, already covered by existing tests.

* platform/efl/CursorEfl.cpp:
(WebCore::Cursor::Cursor):
(WebCore::Cursor::operator=):

Tools:

Enable ENABLE_MOUSE_CURSOR_SCALE for EFL port.

* Scripts/webkitperl/FeatureList.pm:

LayoutTests:

Unskip fast/css/cursor-parsing-image-set.html for EFL port
now that scaled cursors are enabled. Update expectation for
fast/events/mouse-cursor-image-set.html to explain the
reason why it is failing and set its bug URL.

* platform/efl/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149362 268f45cc-cd09-0410-ab3c-d52691b4dbfc