Commit Briefs
use path-less names for ssh, samterm.
let execvp sort it out.
Lib9.h updated to support plumber from Caerwyn Jones.
(New lib9.h expected soon.)
Single-threaded plumber that can run "start" rules.
Thanks to Caerwyn Jones.
Move werrstr into errstr, so that if you use werrstr
you have to get this __errfmt instead of the one in libfmt that only does Unix error codes.