most of this is plumbing to get CompileOptions down into 
CodeGenModule.  Once there, add a new NoCommon option to
it and implement -fno-common.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67735 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed