This is a pretty straightforward first pass over removing a number of uses of
Mutex in favor of std::mutex or std::recursive_mutex. The problem is that there
are interfaces which take Mutex::Locker & to lock internal locks. This patch
cleans up most of the easy cases. The only non-trivial change is in
CommandObjectTarget.cpp where a Mutex::Locker was split into two.
llvm-svn: 269877
Still working out some of the details of these classes but
I wanted to get the overall structure checked in.
<rdar://problem/15314068>
llvm-svn: 194245
Saleem Abdulrasool