Split serialization ASTConsumers into two consumers: SingleFileSerializer and
BuildSerializer. The former serializes a single translation unit to a
corresponding .ast file. The second serializes ASTs to a common emission
direction.  The latter is not fully implemented yet.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45232 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed