2014-02-19  Shilpa Shri  <shilpa.shri@samsung.com>

        WebCLMemobject::getInfo() returns invalid MEM_FLAGS.

        Fixed #457

        Reviewed by Sharath and Antonio.

        Summary :
        - Masking out HOST_PTR value obtained from OpenCL.
        - Correcting mistake in commit : 0cf463a10b428f9aad950c042f80035fed8a39d8

        Conformance test:
        conformance/bindingTesting/fetchInfo/cl_memoryObject_getinfo.html

        * Modules/webcl/WebCLDevice.cpp:
        (WebCore::WebCLDevice::getInfo):
        * Modules/webcl/WebCLKernel.cpp:
        (WebCore::WebCLKernel::getWorkGroupInfo):
        * Modules/webcl/WebCLMemoryObject.cpp:
        (WebCore::WebCLMemoryObject::getInfo):