fix for lost password with credentials:legacy applied upstream 896f07bf3c08becc06a881f57fb0ad2160819d45 which causes the prompted password to be passed on correctly
fix bcc/dcc handling for mts sendmail/pipe patch makes bcc behave the same regardless of mts config, and messages with dcc are now rejected with mts sendmail/pipe. manpages for send and post slightly updated and clarified.