elmo-util.el (elmo-max-of-list): Refactored.
elmo-util.el (elmo-max-of-list, elmo-cache-get-path-subr, elmo-warning): Explicit function's symbols.
elmo-util.el (elmo-max-of-list): Fix the last change for the case argument is nil.
Improve performance of uniquifying large list of sortable numbers.
wl-summary.el (wl-summary-default-subject-filter): Minor refactoring.
Keep multiple parent Message-IDs in msgdb.
elmo-util.el (elmo-list-diff): Simplified.  Sort each element of return value.
wl-summary.el (wl-summary-insert-thread): Report progress.
Merged from upstream.
Merge branch 'master' of git://github.com/wanderlust/wanderlust
elmo-imap4.el (elmo-imap4-setup-send-buffer): Fix typo.  Bind inhibit-eol-conversion to nil before code conversion.
elmo-pop3.el (elmo-pop3-read-body): Fix trying to access buffer local variable from another buffer.
Check references field's value by user.
Add the comment for old msgdb.
Fix digest flag search for IMAP and NNTP folders.
Merge remote-tracking branch 'ikazuhiro/master'

Conflicts:
	wl/ChangeLog