Reviewed by Laszlo Gombos.

        [Symbian] OSAllocator implementation for Symbian OS.
        Manages both data and code region requests. V8 and Sunspider tested
        OK with interpreter. Not tested with JSC JIT yet as it has unrelated
        failures. Also no thread safety yet.
        https://bugs.webkit.org/show_bug.cgi?id=51128

        * JavaScriptCore.pri: removed HAL linkage
        * wtf/Bitmap.h:
        (WTF::::findRunOfZeros): find run of zeros in a bitmap. quick n dirty
        * wtf/OSAllocator.h:
        (WTF::OSAllocator::decommitAndRelease): decommit explicitly
        * wtf/OSAllocatorSymbian.cpp: Impl. of OSAllocator interface
        (WTF::allocateCodeChunk): utility for code chunks
        (WTF::deallocateCodeChunk): utility for code chunks
        (WTF::dataAllocatorInstance): getter for data allocator instance
        (WTF::OSAllocator::reserveUncommitted):
        (WTF::OSAllocator::releaseDecommitted):
        (WTF::OSAllocator::commit):
        (WTF::OSAllocator::decommit):
        (WTF::OSAllocator::reserveAndCommit):
        (WTF::PageAllocatorSymbian::PageAllocatorSymbian): maps requests
        to one underlying Symbian chunk
        (WTF::PageAllocatorSymbian::~PageAllocatorSymbian):
        (WTF::PageAllocatorSymbian::reserve):
        (WTF::PageAllocatorSymbian::release):
        (WTF::PageAllocatorSymbian::commit):
        (WTF::PageAllocatorSymbian::decommit):
        (WTF::PageAllocatorSymbian::contains):
        * wtf/PageAllocatorSymbian.h: Added.
        (WTF::SymbianChunk::SymbianChunk): wrapper around RChunk
        (WTF::SymbianChunk::~SymbianChunk):
        (WTF::SymbianChunk::contains):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@79126 268f45cc-cd09-0410-ab3c-d52691b4dbfc