to 312 bytes (The classical 64 bytes are likely to be too small if a
rootpath is transferred.)
-make CMU vendor extension support optional
-remove code handling domain name/server (unneeded for boot code)
- -Wall fixes in debug code
these are hacks (s/long/int/, etc.), but this code really needs a heavy
cleaning (including fixed-size typing) and I don't have time to give it one
now.
