* Update the NetBSD programs to use <signal.h>, and don't
   	  worry about third party programs.

i'd like to see this done anyway; just another of the cleanups of
the source tree.  no, i'm not volunteering.
   
   	* Merge <signal.h> and <sys/signal.h>; then make a symlink
   	  between /usr/include/signal.h and /usr/include/sys/signal.h.

this is what i would do.  there are already several symlinks
in /usr/include for this purprose.

.mrg.