* mkpasswd.c: include lmerr.h
(main): New -u option to allow specifying a
specific user. If specified, groups aren't displayed and
output is limited to only the specified user.
(enum_users): If specific user is specified, via -u option,
display only that user's record. With -u use NetUserGetInfo
instead of NetUserEnum.
(load_netapi): Added netusergetinfo.