Get rid of WebCoreSystemInterface on Windows

 Get rid of WebCoreSystemInterface on Windows

 WebCore:

         Get rid of WebCoreSystemInterface on Windows

         The one function defined in that file is now in WebKitSystemInterface.

         Reviewed by Tim.

         * WebCore.vcproj/WebCore.vcproj: Removed
         WebCoreSystemInterface.{cpp,h}.
         * platform/graphics/cg/ImageCG.cpp: Made #include of
         WebCoreSystemInterface.h Mac-only.
         * platform/win/GraphicsContextWin.cpp: Ditto.
         * platform/win/WebCoreSystemInterface.cpp: Removed.
         * platform/win/WebCoreSystemInterface.h: Removed.

 WebKitLibraries:

         Add wkSetPatternPhaseInUserSpace to WebKitSystemInterface on Windows

         Reviewed by Tim.

         * win/include/WebKitSystemInterface/WebKitSystemInterface.h: Added
         declaration.
         * win/lib/WebKitSystemInterface.lib: Updated.
         * win/lib/WebKitSystemInterface_debug.lib: Updated.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28005 268f45cc-cd09-0410-ab3c-d52691b4dbfc