Nex now does railgun style damage, and is always in instagib mode (800 damage), decre...

Nex now does railgun style damage, and is always in instagib mode (800 damage), decreased nex force (it was throwing gibs too far, now only slight push), removed radius damage on nex (which was there only to scatter gibs anyway) and increased gib scatter velocity
qcsrc now compiles in fteqcc
commented out a number of unused fields and variables which fteqcc warned about
pulled back the starting origin for all weapons to never more than v_forward * 15 because it's very easy for it to be outside the player box otherwise (which can fail to hit targets that are too close), this still happens in some cases (particularly upward shots)
removed the commented out multidamage code in damage.qc
changed all eventdamage functions to take a force so they can spawn directional blood effects, and shuffled their parameters to match Damage's parameters

git-svn-id: svn://svn.icculus.org/nexuiz/trunk@226 f962a42d-fe04-0410-a3ab-8c8b0445ebaa