2013-08-12  Sharath Kamath  <s.kamath@samsung.com>

        Device Info:getInfo() Update as per WD update.
        Issue #276

        Reviewed by Antonio.

        As per bug [https://www.khronos.org/bugzilla/show_bug.cgi?id=826]
        we need to add support to the the following params.
        DEVICE_MAX_COMPUTE_UNITS
        DEVICE_GLOBAL_MEM_SIZE
        DEVICE_MEM_BASE_ADDR_ALIGN
        DEVICE_SINGLE_FP_CONFIG
        DEVICE_COMPILER_AVAILABLE

        [TEST] conformance/computeinfo/cl_device_getinfo.html
        in https://github.com/SRA-SiliconValley/webkit-webcl-conformance

        * Modules/webcl/WebCL.idl:
        * Modules/webcl/WebCLDevice.cpp:
        (WebCore::WebCLDevice::getInfo):
        * Modules/webcl/WebCLInputChecker.cpp:
        (WebCore::WebCLInputChecker::isValidDeviceInfoType):