[jhc] darcs patch: add a lot more of jgc garbage collector (and 2 more)

Fri Mar 19 17:55:31 PDT 2010 John Meacham * add a lot more of jgc garbage collector Fri Mar 26 17:00:12 PDT 2010 John Meacham * remove caf initialization from main routine, let cafs be statically initialized. Fri Mar 26 17:57:13 PDT 2010 John Meacham * fix GC bugs so garbage collection works