Fix the build harder after Bill's recent frame-pointer codegen changes.
Patch by Bill.  Bill, we salute you!  While there, move the stack protector
buffer size logic into the same more logical place.


git-svn-id: https://llvm.org/svn/llvm-project/dragonegg/trunk@187144 91177308-0d34-0410-b5e6-96231b3b80d8