* thread.cc (pthread_cond::TimedWait): Check for WAIT_TIMEOUT as well as WAIT_ABANDONED. (__pthread_cond_timedwait): Calculate a relative wait from the abstime parameter.
* dlmalloc.h: Ditto. * Makefile.in: Add support for MALLOC_DEBUG * config.h.in: Ditto. * winsup.h: Ditto. * configure.in: Add --enable-malloc-debugging option. * configure: Regenerate. * debug.h: Include declarations for debugging malloc. * tty.cc (grantpt): Fix definition. (unlockpt): Ditto.