DFG JIT Operations on 32_64 should use stdcall calling convention.

DFG JIT Operations on 32_64 should use stdcall calling convention.
https://bugs.webkit.org/show_bug.cgi?id=69046

Reviewed by Sam Weinig.

All calls out are expecting stdcall conventions, but the default on OS X are cdecl.
Leave D_DFGOperation_DD calls as the one exception, since we want to be able to link
directly to std library functions like fmod - leave these calls obeying the default
platform calling convention.

* assembler/MacroAssemblerCodeRef.h:
(JSC::FunctionPtr::FunctionPtr):
    - Add implicit constructors for std calls.
* dfg/DFGJITCodeGenerator.h:
(JSC::DFG::callOperation):
    - Make this work non-Mac platforms.
* dfg/DFGOperations.cpp:
(JSC::DFG::operationPutByValInternal):
* dfg/DFGOperations.h:
    - Mark all operations as stdcalls.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@96286 268f45cc-cd09-0410-ab3c-d52691b4dbfc