improve config reading when operating on remote on same host

Before the config was read each time onLocal was called, and entirely
redundantly since it's read for same-host remotes on startup.

Also a minor bug fix: When rsyncing to a same-host remote, use the
rsync-options from the repository that the user ran git-annex in, not those of
the receiving repository.

Annex.hs

@@ -12,6 +12,7 @@ module Annex (
 	AnnexState(..),
 	OutputType(..),
 	new,
+	newState,
 	run,
 	eval,
 	getState,