More paranoid checking...

More paranoid checking...
* k5-thread.h (k5_os_mutex) [pthread case]: Add new field "owner" if
DEBUG_THREADS.
(k5_pthread_mutex_lock, k5_pthread_mutex_unlock, k5_pthread_assert_locked): New
macros/functions; if DEBUG_THREADS, set or check the owner field.
(K5_OS_MUTEX_PARTIAL_INITIALIZER) [pthread case && DEBUG_THREADS]: Set the
owner field.  If PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP is defined, use it.
(k5_os_mutex_lock, k5_os_mutex_unlock, k5_os_mutex_assert_locked) [pthread
case]: Use k5_pthread_ versions.
(k5_mutex_destroy): Update the location data with the mutex locked, before
destroying it.
(k5_mutex_unlock): Update the location data while the mutex is still locked,
and check the assertion that the mutex really is locked.  Convert inline
function to macro.

* k5-thread.h (krb5int_mutex_lock_update_stats,
krb5int_mutex_unlock_update_stats, krb5int_mutex_report_stats)
[!DEBUG_THREADS_STATS]: Declare KRB5_CALLCONV.

ticket: 2878
status: open

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@17031 dc483132-0cff-0310-8789-dd5450dbe970