Create initial wrapper to WebCL tests

#issue 68

Signed-off-by: Ragner Magalhaes <ragner.magalhaes@gmail.com>
Initial test to WebCL wrapper

Signed-off-by: Ragner Magalhaes <ragner.magalhaes@gmail.com>
Using the commom resource files to WebCL tests

    * Applying LayoutTests directory structure
    * Added stub webcl-test-utils javascript file

Signed-off-by: Andre Luiz Viana Loureiro <andre.vl@samsung.com>

Reviewed-by: Diego Pinheiro
Reviewed-by: Alexandre Rocha