This commit changes the OPAL_THREAD_LOCK/OPAL_THREAD_UNLOCK calls in
ompi/proc to opal_mutex_lock/opal_mutex_unlock. This will allow
multi-threaded BTLs the ability to creat ompi_proc_t's without having
to set opal_using_threads. There should be no performance hits as none
of the lock points are in the critical path.
Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>