Update IP glob matching to work more accurately with IPv6.

Update IP glob matching to work more accurately with IPv6.

When given an IP like 2001::1234:5678:1:2:3:4, srvx (properly) makes
a glob like 2001:0:4137:*.  However, it wouldn't realize that the
glob actually matches the IP, because it used string glob matching.

src/tools.c (user_matches_glob): Use a parsed glob to match against
  the user's IP address.