Fix DisplayLogComponentLevel recursion with NIV_FULL_DEBUG

If ganesha is started with NIV_FULL_DEBUG, DisplayLogComponentLevel
calls PTHREAD_RWLOCK_xxx() functions which call DisplayLogComponentLevel
to log messages. This continues in a loop until segmentation fault
happens!  A regression introduced by commit
344de4ab632713145194e936a8fb3568b9538321

Redefine PTHREAD_RWLOCK_xxx macros in logging file to avoid logging
inside PTHREAD_RWLOCK_xxx macros.

Signed-off-by: Malahal Naineni <malahal@us.ibm.com>
Reported-by: Soumya Koduri <skoduri@redhat.com>
Reviewed-by: Frank S. Filz <ffilzlnx@mindspring.com>