this depends on the bitcode reader, since it is using it.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172905 91177308-0d34-0410-b5e6-96231b3b80d8
these now depend on the bitcode reader too.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172906 91177308-0d34-0410-b5e6-96231b3b80d8
fix the unit tests too.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172907 91177308-0d34-0410-b5e6-96231b3b80d8
update header comment.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172909 91177308-0d34-0410-b5e6-96231b3b80d8