ps: changed to exploit a newly added UID used at login

This patch represents a newlib adaptation of the merge
request offered by Jan Rybar that is referenced below.

Reference(s):
https://gitlab.com/procps-ng/procps/merge_requests/57
https://bugzilla.redhat.com/show_bug.cgi?id=1518986

Signed-off-by: Jim Warner <james.warner@comcast.net>

ps/common.h

@@ -88,6 +88,7 @@ makEXT(ID_FGID)
 makEXT(ID_FGROUP)
 makEXT(ID_FUID)
 makEXT(ID_FUSER)
+makEXT(ID_LOGIN)
 makEXT(ID_PGRP)
 makEXT(ID_PID)
 makEXT(ID_PPID)