Commit Briefs
clean up when finished.
don't set PLAN9 don't set PLAN9
Fighting the good fight.
Move libfmt, libutf into subdirectories of lib9. Add poll-based socket i/o to libthread, so that we can avoid using multiple procs when possible, thus removing dependence on crappy pthreads implementations. Convert samterm, acme to the single-proc libthread. Bring libcomplete, acme up-to-date w.r.t. Plan 9 distribution.
make -> mk
use $HOME/mnt/plumb as named pipe.