Zweihander

A new melee weapon, the zweihander.  Made with help from whitelight04 and others here #2349 it's a large, heavy sword with WIDE, BRUTAL, and WBLOCK_1.  Trying to add some more WIDE melee options to the game, take a look and see what you think!

Tested and works, now with 100% better spelling! (Thanks CIB)