2014-01-18  Antonio Gomes  <a1.gomes@sisa.samsung.com>

        Simple kernel parser: make "unsigned xxx" -> "uxxx"
        Issue #411

        Reviewed by Igor.

        According to the 1.2 spec, unsigned type declaration
        has to return a prefixed "utype" when queried.

        * Modules/webcl/WebCLKernelArgInfoProvider.cpp:
        (WebCore::prependUnsignedIfNeeded):
        (WebCore::WebCLKernelArgInfoProvider::parseAndAppendDeclaration):
        (WebCore::WebCLKernelArgInfoProvider::extractType):