WebCL Conformance test suite update.

    Fixing issues mainly to take care of the review comments from reviewers.
    1. Adding Functionality testing for release and releaseAll API. [SRA Issue#237]
    2. [Khronos Issue#22] Correcting check for device in conformance/functionalityTesting/basics/createProgram.html
    3. [Khronos Issue#10 and Khronos Issue#23] Use 'shouldBeTypeOrException' for device dependent results.
    4. Renaming WEBCL_html_sharing to WEBCL_html_image across all extension files. [SRA Issue#259]
    5. Comparing kernel arguments against strings in cl_kernel_getArgInfo.html [SRA Issue#261]
    6. [Khronos Issue#24] Relaxing exception in bindingTesting/contextAndCreate/cl_context_createCommandQueue.html

    Contributors :
    SRI-B : Shilpa Shri, Sharath Kamath.
    SRA : Antonio, Steven and Igor.

    Details on changes is available at master_r12312013 branch:
    https://github.com/SRA-SiliconValley/webkit-webcl-conformance.git.