2014-01-22  Shilpa Shri  <shilpa.shri@samsung.com>

        Add implementation to verify IMAGE_FORMAT_MISMATCH
        Issue #430

        Reviewed by Sharath and Antonio.

        Conformance test cases:
        conformance/bindingTesting/queues/cl_commandQueue_enqueueCopyImage.html

        * Modules/webcl/WebCLCommandQueue.cpp:
        (WebCore::WebCLCommandQueue::enqueueCopyImage):
        * Modules/webcl/WebCLImage.cpp:
        (WebCore::WebCLImage::imageFormat):
        * Modules/webcl/WebCLImage.h:
        * Modules/webcl/WebCLInputChecker.cpp:
        (WebCore::WebCLInputChecker::compareFormat):
        * Modules/webcl/WebCLInputChecker.h: