Check whether or not we have mlist info in our summary.

Check whether or not we have mlist info in our summary.

2005-01-26  Jeffrey Stedfast  <fejj@novell.com>

	* providers/imap4/camel-imap4-summary.c (imap4_header_load): Check
	whether or not we have mlist info in our summary.
	(imap4_header_save): Save have_mlist.
	(camel_imap4_summary_flush_updates): Modified to clear the summary
	and do a complete refetch if enable_mlist has been newly enabled
	and we don't already have mlist info in our summary info's.
	(imap4_fetch_all_add): If the \Recent flag is set, also add it to
	the "recent" changes structure so the filetr code knows to filter
	it.