K 10
svn:author
V 4
bapt
K 8
svn:date
V 27
2012-06-02T15:14:12.717829Z
K 7
svn:log
V 416
MFC: 228545,229572

Modify pw_copy:
- if pw is NULL and oldpw is not NULL then the oldpw is deleted
- if pw->pw_name != oldpw->pw_name but pw->pw_uid == oldpw->pw_uid
then it renames the user

add new gr_* functions so now gr_util API is similar to pw_util API,
this allow to manipulate groups in a safe way.

Add new pw_make_v7 to make a passwd line (in v7 format) out of a struct passwd

Approved by:	des (mentor)

END