4.4BSD snapshot (revision 8.1); add 1993 to copyright
use err/warn, instead of rolling our own
use new library function getgrouplist
Add include files to get prototype declarations, and fix bugs found.
new copyright notice
duplicate "effective" group id in groups, so not lost when execing setgid
add Berkeley specific copyright
Change error return to -1 to match manual page. Shouldn't affect anything --no utility that I can find ever checks the return value!
added LIBC_SCCS condition for sccs ids
Add copyright
don't forget to close the file
avoid duplicate group id's; update diagnostics
complain about too many groups too early
date and time created 82/11/07 19:11:20 by sam