Reviewed by Gavin Barraclough.

        Reorganize ARM architecture specific macros.
        Use PLATFORM_ARM_ARCH(7) instead of PLATFORM(ARM_V7).

        Bug 24986: ARM JIT port
        <https://bugs.webkit.org/show_bug.cgi?id=24986>

        * assembler/ARMv7Assembler.h:
        * assembler/AbstractMacroAssembler.h:
        (JSC::AbstractMacroAssembler::Imm32::Imm32):
        * assembler/MacroAssembler.h:
        * assembler/MacroAssemblerCodeRef.h:
        (JSC::MacroAssemblerCodePtr::MacroAssemblerCodePtr):
        * jit/ExecutableAllocator.h:
        (JSC::ExecutableAllocator::cacheFlush):
        * jit/JIT.h:
        * jit/JITInlineMethods.h:
        (JSC::JIT::restoreArgumentReferenceForTrampoline):
        * jit/JITStubs.cpp:
        * jit/JITStubs.h:
        * wtf/Platform.h:
        * yarr/RegexJIT.cpp:
        (JSC::Yarr::RegexGenerator::generateEnter):
        (JSC::Yarr::RegexGenerator::generateReturn):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44886 268f45cc-cd09-0410-ab3c-d52691b4dbfc