updated for version 7.4.438
Problem:    Cached values for 'cino' not reset for ":set all&".
Solution:   Call parse_cino(). (Yukihiro Nakadaira)
Added tag v7-4-438 for changeset db3b8fe8330e
updated for version 7.4.439
Problem:    Duplicate message in message history.  Some quickfix messages
	    appear twice. (Gary Johnson)
Solution:   Do not reset keep_msg too early. (Hirohito Higashi)
Added tag v7-4-439 for changeset 07b28e96af8b