* Shorten timeout period from 12 hours to 4 hours to avoid delaying the builds
unnecessarily.
* Reverse sense of NOPLISTCHECK -> PLISTCHECK, since it's not an option
we want enabled by default (it causes too many build failures). This
was too easy to forget when building packages 'by hand' using the parallel
makefile.
behind. Useful for debugging.
Touch package on master after copying it back. This will avoid synchronization
problems when the machines' clocks are wildly skewed.
Remove log from master when build is successful. No need to keep around
transient error logs.
Tools/portbuild for details.
Note that this is still a major work in progress. I probably forgot
something but I need to go to sleep. At least it works here (most of
the time :).