Add -P to skip build.sh completely if running script n times
Merge branch 'master' of hutcs.hut.fi:src/buildrump.sh
Use MAKEDIRTARGET for nicer output with -q
Decrease noisiness with each given -q
Merge branch 'master' of hutcs.hut.fi:src/buildrump.sh
Add a -H flag to signal that even unknown hosts are ok.

Also, add Cygwin to the host list to automate some build flags.
Don't accept Cygwin without -H, though, since it doesn't fully work.
stash merge
Add -T to override default tooldir (to e.g. put in your PATH)