Use IS_OPENBRD for all board ACL checks.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5982 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Revise messages


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5983 63ad8ddf-47c3-0310-b6dd-a9e9d9715204
Revise more strings.


git-svn-id: http://opensvn.csie.org/pttbbs/trunk@5984 63ad8ddf-47c3-0310-b6dd-a9e9d9715204