Revert commit r186217 -- this is breaking bots:

http://lab.llvm.org:8013/builders/clang-x86_64-darwin11-nobootstrap-RAincremental/builds/4328

Original commit log:
  Use the function attributes to pass along the stack protector buffer
  size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186234 91177308-0d34-0410-b5e6-96231b3b80d8

tools/opt/opt.cpp

@@ -510,6 +510,7 @@ static TargetOptions GetTargetOptions() {
   Options.PositionIndependentExecutable = EnablePIE;
   Options.EnableSegmentedStacks = SegmentedStacks;
   Options.UseInitArray = UseInitArray;
+  Options.SSPBufferSize = SSPBufferSize;
   return Options;
 }