0.8.20.20:

0.8.20.20:
	Fix handling of SIG_MEMORY_FAULT in the (conceptual)
	interrupt_handle_now() case -- arrange_return_to_lisp_function()
	to MEMORY_FAULT_ERROR instead, for x86(-64).  (I hope I
	haven't broken anything on other architectures... please check!)
	... also log problem with reporting the error in BUGS