Added sounds to aliens hitting glass and grilles.

Added sounds to alien hisses and roars.
Face huggers now do half the damage with their leap.
New alien hud icons: walk/run, health, and spit intent.
Few icon wips.

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@706 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/objects/alien/facehugger.dm

@@ -239,7 +239,7 @@
 					for(var/mob/O in viewers(world.view,src))
 						O.show_message("\red <B>[src.target] has been leapt on by [lamarr ? src.name : "the alien"]!</B>", 1, "\red You hear someone fall", 2)
 					if (!lamarr)
-						target:bruteloss += 10
+						target:bruteloss += 5
 						if(prob(70))
 							target:paralysis = max(target:paralysis, 5)
 					src.loc = target.loc

code/game/objects/grille.dm

@@ -80,6 +80,7 @@
 		for(var/mob/O in oviewers())
 			if ((O.client && !( O.blinded )))
 				O << text("\red [] mangles the grille.", usr)
+		playsound(src.loc, 'grillehit.ogg', 80, 1)
 		src.health -= 3
 		healthcheck()
 		return

code/game/objects/window.dm

@@ -132,6 +132,7 @@
 	for(var/mob/O in oviewers())
 		if ((O.client && !( O.blinded )))
 			O << text("\red [] smashes against the window.", usr)
+	playsound(src.loc, 'Glasshit.ogg', 100, 1)
 	src.health -= 15
 	if(src.health <= 0)
 		usr << text("\green You smash through the window.")