[LLVMdev] bootstap broken at r196919 in 3.4 branch

[Jack Howarth]

   Current llvm/clang/compiler-rt/polly/testsuite/libcxx from 3.4 branch is broken during the
bootstrap on x86_64-apple-darwin12 against Xcode 5's clang with the failure...

[ 54%] [ 54%] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/AliasAnalysisCounter.cpp.o
Building CXX object lib/ExecutionEngine/CMakeFiles/LLVMExecutionEngine.dir/ExecutionEngine.cpp.o
/sw/src/fink.build/llvm34-3.4-0/llvm-3.4/tools/clang/lib/AST/MicrosoftMangle.cpp:418:12: error: read-only variable is not assignable
      *I++ = 'A' + (Value & 0xf);
      ~~~~ ^