Commit Briefs
Add the #goo to allow use in C++.
Silence a few more warnings. Strip down the mkfiles more. Fix bug in X11 mouse handling, note groups.
use path-less names for ssh, samterm.
let execvp sort it out.
Various tweaks. The implementation of notify, create, etc.
should really be in lib9.
Various tweaks to make things run on Mac OS.
The main change is the use of pthread to implement ffork.