0.8.0.30

0.8.0.30
	Update ASDF from upstream:
	... export OPERATION-ON-{WARNINGS,FAILURE}
	... add verbosity control to make loading optionally much
            more quiet (operate 'load-op :verbose nil)
        ... muffle STYLE-WARNINGS from loaded code in REQUIRE hook.
            Perhaps slightly contentious, but I think while it's fair
            to present these to developers, they just clutter the place
	    up as far as end-users are concerned

	Some TODO notes in SB-POSIX