[EFL] Build break with latest EFL 1.8 libraries.

https://bugs.webkit.org/show_bug.cgi?id=123245

Reviewed by Gyuyoung Kim.

After fixed build break on EFL 1.8 at r138326, EFL libraries are changed
Eo typedef and splitted header files which contain version macro.

.:

* Source/cmake/EFLHelpers.cmake: Checked whether include path exist.
* Source/cmake/FindEcore.cmake: Added 1.8 Header which have version macro.
* Source/cmake/FindEdje.cmake: Ditto.
* Source/cmake/FindEina.cmake: Ditto.
* Source/cmake/FindEo.cmake: Ditto.
* Source/cmake/FindEvas.cmake: Ditto.

Source/JavaScriptCore:

* PlatformEfl.cmake: Added EO path to include directories.
* heap/HeapTimer.h: Changed Ecore_Timer typedef when EO exist.

Source/WebCore:

* platform/Widget.h: Changed Eo typedef.
* platform/efl/EflScreenUtilities.h: Ditto.
* platform/graphics/Image.h: Ditto.

Source/WTF:

* wtf/OwnPtrCommon.h: Changed Eo typedef.
* wtf/efl/RefPtrEfl.h: Ditto.

Tools:

* TestWebKitAPI/PlatformWebView.h: Changed Eo typedef.
* WebKitTestRunner/InjectedBundle/TestRunner.h: Ditto.
* WebKitTestRunner/PlatformWebView.h: Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@157920 268f45cc-cd09-0410-ab3c-d52691b4dbfc