Change Preprocessor to keep a copy of LangOptions instead of reference, like ASTContext.

Now when creating a Preprocessor we can pass it a temporary LangOptions object instead of having to remember to keep it around.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76815 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed