Add support for UltimateIRCd's ! (protected) user mode.
Add support for UltimateIRCd's ! (protected) user mode.

Signed-off-by: James Vega <91ae71a1168cea0b65ac9975da69d5a7753116be@users.sourceforge.net>

raboof/supybot,jeffmahoney/supybot,mazaclub/mazabot-core,haxwithaxe/supybot,Ban3/Limnoria,buildbot/supybot,ProgVal/Limnoria-test,frumiousbandersnatch/supybot-code,ProgVal/Limnoria-test,Ban3/Limnoria,mazaclub/mazabot-core,prashantpawar/supybot-rothbot