Avoid leaking information through ChanServ's ban matching.

Avoid leaking information through ChanServ's ban matching.

src/common.h (user_matches_glob): Convert last argument to be flags.

src/tools.c (user_matches_glob): Reorder tests to properly implement
    the MATCH_VISIBLE flag.

src/chanserv.c: Update callers of user_matches_glob() to set
    the MATCH_VISIBLE flag (in addition to MATCH_USENICK).

src/opserv.c: Update callers of user_matches_glob() to pass the
    MATCH_USENICK flag.
git-archimport-id: srvx@srvx.net--2005-srvx/srvx--devo--1.3--patch-32