Fix building with ENABLE_DEBUG_PRINTF

Clang tells me that "token pasting of ',' and __VA_ARGS__ is a GNU
extension".  Also catch up with changes in function args.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@192920 91177308-0d34-0410-b5e6-96231b3b80d8