port install should save build log in non-verbose mode

[ssen@…]

when doing a normal port install, it may fail for some reason, or you might want to go back later to lok at the ./configure options. If would be useful for the build log to be saved somewhere, maybe /opt/local/var/db/dports/log

If the user explicitly does port -v install, i think the build command should be tee'd to the logfile

[kevin@…]

I did something to this effect in the packageall.tcl script I'm using for the nightly builds. I'll check it into cvs sometime and see if I can merge that functionality with the port(1) command.

[landonf@…]

A while back I switched things around so that if a command fails to execute, the last 30 lines of output are presented to the user, no matter the specified verbosity. I'd consider this an acceptable fix. Agree or no?