[ADD] More Great Maps

[Rellikdloc]

Map: gg_vc2_inferno
Location: http://www.gamebanana.com/maps/23907
Reason: This is an awesome small map and it gets away from all those texture maps we have.

Map: gg_sl_cross3
Location: http://www.gamebanana.com/maps/50489
Reason: This is also a great map not too big not too small and has just the right elements for a good gg.

Map: gg_punishment
Location: http://www.gamebanana.com/maps/20471
Reason: Fun map

Map: gg_watermaze_2
Location: http://www.gamebanana.com/maps/20778
Reason: Small quick map, lots of knife kills