Expect :mutexattr2 to fail on FreeBSD

pthread_mutexattr_getprioceiling and pthread_mutexattr_setprioceiling
both return EINVAL if ->m_protocol != PTHREAD_PRIO_PROTECT. The
reasoning behind this decision isn't documented in neither the FreeBSD
nor the OpenGroup manpages.

Add printf's to add in debugging the issue

PR: 211802
Sponsored by: EMC / Isilon Storage Division