https://bugs.webkit.org/show_bug.cgi?id=120998

Patch by peavo@outlook.com <peavo@outlook.com> on 2013-10-30
Reviewed by Brent Fulgham.

Source/JavaScriptCore:

* JavaScriptCore.vcxproj/JavaScriptCore.vcxproj: Added files.
* JavaScriptCore.vcxproj/JavaScriptCore.vcxproj.filters: Ditto.
* dfg/DFGAllocator.h: Removed scope.
* dfg/DFGWorklist.cpp: Use new ThreadingOnce class instead of pthread_once.
(JSC::DFG::globalWorklist):
* heap/DeferGC.h: Link fix, member needs to be public.
* jit/JITOperationWrappers.h: Added required assembler macros.

Source/WTF:

* wtf/CompilationThread.cpp: Use new ThreadingOnce class instead of pthread_once.
(WTF::initializeCompilationThreads):
* wtf/ThreadingOnce.h: Added ThreadingOnce class encapsulating pthread_once functionality.
(WTF::ThreadingOnce::ThreadingOnce):
(WTF::ThreadingOnce::~ThreadingOnce):
(WTF::ThreadingOnce::callOnce):
* wtf/text/CString.h: Export needed symbols.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@158282 268f45cc-cd09-0410-ab3c-d52691b4dbfc