Better printf()s
all four tests are working with jduell's latest fix to the API
Merge branch 'observer-only' into on-channel-redirect

Conflicts:
	test_redirect_from_script.js
use nsIEventSink to make Tests 5 & 6 from 3 & 4.
asyncOnChannelRedirect cases now set up

(but not yet working)
Extra nifty verbosity