2013-01-22  Joel Sherrill <joel.sherrill@oarcorp.com>

	* libc/include/pthread.h: Add PTHREAD_RWLOCK_INITIALIZER.
	Fix typo on PTHREAD_COJND_INITIALIZER.
* miscfuncs.cc (__import_address): Avoid treating random instructions as import
jump.
* malloc_wrapper.cc (malloc_init): Remove comment about 64-bit.
* miscfuncs.cc (__import_address): Avoid NULL explicitly.
* exceptions.cc (exception::handle): Make attempt to recursively dump stack
fatal.
* miscfuncs.cc (__import_address): On second thought, the chance that this
pointer could be NULL is very low so don't bother checking for it.
* miscfuncs.cc (__import_address): Check if malloc field points directly at
'malloc'.