Added four new slime types (sprites by Reisyn, SuperElement, and LePinkyFace)

Fixed the backwards pumps in misc research, shuffled the xenobio surgical area around to be easier to use.

Fixed being able to strip items with canremove = 0

Added a new mutantrace that ties into the new slime extracts (sprites by SuperElement)

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@5490 316c924e-a436-60f5-8080-3fe189b3f50e

code/modules/projectiles/gun.dm

@@ -59,6 +59,10 @@
 			if (HULK in M.mutations)
 				M << "\red Your meaty finger is much too large for the trigger guard!"
 				return
+		if(ishuman(user))
+			if(user.dna && user.dna.mutantrace == "adamantine")
+				user << "\red Your metal fingers don't fit in the trigger guard!"
+				return
 
 		add_fingerprint(user)