(loc_RunThread, empth_init, empth_threadMain, empth_yield)

(loc_RunThread, empth_init, empth_threadMain, empth_yield)
(empth_select, empth_sleep, empth_wait_for_signal)
(empth_sem_wait) [EMPTH_W32]: Add the ability to wait additional
event in loc_RunThread() when acquiring the hThread mutex.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock): New.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
[EMPTH_W32]: WIN32 implementation.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
(lwp_rwlock, lwp_rwlock_create, lwp_rwlock_destroy)
(lwp_rwlock_wrlock, lwp_rwlock_rdlock, lwp_rwlock_unlock)
[EMPTH_LWP]: LWP implementation.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
[EMPTH_POSIX]: pthread implementation.