remote-build.py for remote building on Linux and FreeBSD.
remote-build.py: added --port|-p SSH-PORT.

By default the rsync/ssh commands use port 22.  Now a different
port can be specified in the event that the ssh is mapped/listening
on a different port.
remote-build.py: added --debug/-d, moved commandline prints to --debug/-d

-d previously was the short version for --remote-dir.  It no longer is.  Use
--remote-dir when setting.