1_70 Alpha

ghudson

pthreads/pthread.c, pthreads/pthread_init.c, pthreads/sleep.c, 
include/pthread.h: 
	The sleep queue has been replaced by a heap, for faster insertion.

raeburn

config/Makefile.in : 
	disable "-pg" profiling until we know we have a thread-safe mcount

config/GNUmakefile.in : don't delete obj directory, just its contents