UYpdate WebCL PLugin FF 22 for OSX

I rebuild gcc 4.8.1 on 10.8 and rebuild the XUL.framework too 

i build on OSX 10.8 because i have some trouble on OSX 10.9 with OpenCL framework and GCC

When i have time will be try to rebuild WebCL Plugin with clang 5 on Maverick