2013-10-25  Sharath Kamath  <s.kamath@samsung.com>

        Match the exceptions with Specification.

        Issue #268

        Reviewed by Antonio.

        Removal of MAP_FAILURE, INVALID_BINARY and rename FAILURE -> WEBCL_IMPLEMENTATION_FAILURE.
        as decided by working group in https://www.khronos.org/bugzilla/show_bug.cgi?id=946.

        No new tests (OOPS!).

        * Modules/webcl/WebCL.idl:
        * Modules/webcl/WebCLException.cpp:
        (WebCore::WebCLException::initializeDescription):
        (WebCore::WebCLException::computeContextErrorToWebCLExceptionCode):
        * Modules/webcl/WebCLException.h:
        * Modules/webcl/WebCLException.idl: