Log Message:
Update to Dovecot 1.1rc11.  From the release announcement:

This is the final v1.1 RC. Tomorrow I'll change only the version number,
update the documentation and call it v1.1.0. But please test this anyway
to make sure I didn't happen to break anything since rc10 :)

	- dovecot-uidlist is now recreated if it results in file shrinking
	  over 25%.
	- Some other minor fixes