rename mailcvt_setup to setup_mailcvt for tab in bash
fix updatepkg to not delete pkg folder.
revise bugs when calculate path.
cron job cannot find mailcvt command. change to absolute path
ruby folder is 3 level upon the mailcvt bin folder.
output command line to log.
load ruby environments before call cmd from cron.
load ruby environments before call mailcvt from cron.
combine rejectsize into runmailcvt to limit script number.
output value of first keyword only.

outlook will send mail contains From or To keyword in
the mail body.
now can long To: list

copy incomplete mail to daily/incomplete dir.
and run the same process once again.