- Fix a few possible crashes.

- Fix xenmaker sprites never being removed if their framerate is 0.
- Fix xenmaker sprites never showing if their scale is 0.
- Add trigger_setcvar.
- New "health" keyvalue for monsters/monstermaker for custom health.

src/dlls/apache.cpp

@@ -41,7 +41,7 @@ void CMApache :: Spawn( void )
 
 	pev->flags |= FL_MONSTER;
 	pev->takedamage		= DAMAGE_AIM;
-	pev->health			= gSkillData.apacheHealth;
+	if (!pev->health)	{ pev->health = gSkillData.apacheHealth; }
 
 	m_flFieldOfView = -0.707; // 270 degrees