bugfix: the multiplexer increments optc and then the command the multiplexer runs increments it further, resulting in a wrong count. Fix: zero it.
New toy fsfreeze, from Isaac Dunham, plus minor cleanups.
In ifconfig.c, there is a glitch in function get_addrinfo() when computing the prefix length.
Decided not to go with the sflate implementation of deflate/inflate. The decompression side's already reimplemented in compress, and I'm working on compression side.