0.6.12.49:

0.6.12.49:
	made verbose GC output report GET-INTERNAL-RUN-TIME when each
		GC happens, so that when you reading a log containing
		many verbose GC messages, you have a better chance of
		grokking what happened
	fixed POSIX-GETENV doc string after Alexey Dejneka pointed out
		that it was wrong