Fixed a crash exploit with Thruster tool
Merge pull request #641 from robotboy655/crashfix

Fixed a crash exploit with Thruster tool
Added actbusy.txt

Fixes zombies not using "sleeping" animations in episodes
Added breaks to the validity checks
Updated langauge files for more entities that might kill you
It's Bullsquid, not Bull Chicken.
Merge pull request #642 from robotboy655/p1

Added actbusy.txt
Added HL2 jumping system back to Sandbox (now works in multiplayer as well)
Removed __unm from Vector and Angle (now implemented in C++)
Removed lua/test.lua
Added PLAYER:GetHandsModel back (accidentally removed it, whoops)
Remove CS:S props from default spawnlists
Merge pull request #645 from robotboy655/patch-1

Remove CS:S props from default spawnlists