Link bug with lockf & shared libraries

[Steven L. Baur]

There is a linking bug on the UNIXPC between the shared library and the
lockf(3) function.  After a little checking I found lockf.o in /lib/libc.a.
This is fairly obnoxious considering all the other garbage in the shared
library.

I am writing an at(1) program since my UNIXPC came without one.  Watch for
it in comp.sources.misc.  I have found several bugs in both BSD and system V
ats that are fixed.

steve