409495f6c7
- Added support for reading netgroups from NIS/YP in addition to the local /etc/netgroups file. (Note that SunOS and many other systems only support reading netgroups via NIS, which is a bit odd.) - Fix Evil Null Pointer Dereferences From Hell (tm) that caused parse_netgrp() to SEGV when expanding netgroups that include references to other netgroups. Funny how nobody else noticed this. This is the first step in implimenting +@netgroup substitution in getpwent.c and any other places that could use it and don't already support it (which is probably everywhere).