2013-07-29  Diego Pinheiro  <diego.qp@samsung.com>

        Fix WebCL<->WebGL Interoperability Layout Test
        Issue #90

        Reviewed by Afonso Costa.

        webcl-proxy was calling enqueueAcquireObjects for both
        AcquireGL and ReleaseGL functions. This was working in
        Mac OS X and breaking in Linux port - the right behavior
        was to not work in neither of the OS.

        Now webcl-proxy and the layout test are working.

        * webcl/tests/webcl-test-interop.html:
        * webcl/resources/webcl-proxy.js: