468671f5be
+ Use _PATH_GROUP and _PATH_MASTERPASSWD (from OpenBSD) + Use -G group1,group2,group3 for multiple groups in useradd and usermod (pointed out by Matt Green, and also changed in OpenBSD, but done more efficiently here) + is_number should not be inside #ifdef EXTENSIONS (from OpenBSD) + clear up yet another usage message (for user(8) and group(8)) - noticed in passing, unknown if fixed anywhere else