* Add GC_push_all/conditional() to GC public API.
* Add public GC_set/get_abort_func to replace default GC_on_abort.
* Add public setter and getter for GC_push_other_roots.
+* Add thread suspend/resume signals public setters (POSIX threads).
* Call GC_on_abort (with NULL argument) on exit(1).
* Include proper header file in 'tools' for configuration macros.
+* Move GC_get_suspend/thr_restart_signal to misc.c for NaCl and OpenBSD.
* Recognize GC_DONT_GC macro in gc.h (causes GC_INIT to turn off GC).
+* Recognize GC_SIG_SUSPEND and GC_SIG_THR_RESTART tuning macros in gc.h.
+* Replace SIG_SUSPEND/THR_RESTART macros to variables in pthread_stop_world.
* Suppress GCC warnings in test_cpp and cord 'de' app.
* Turn off GC_LOOP_ON_ABORT functionality if GC compiled with NO_DEBUGGING.