Speed in nograv works correctly now

Dismemberment support added as well as a way to use the limbs of another species for dismemberment for visually identical species
Flying var changed to species flag

code/modules/surgery/bodyparts/bodyparts.dm

@@ -174,7 +174,7 @@
 	should_draw_greyscale = FALSE
 
 	var/datum/species/S = H.dna.species
-	species_id = S.id
+	species_id = S.limbs_id
 
 	if(S.use_skintones)
 		skin_tone = H.skin_tone

code/modules/surgery/bodyparts/helpers.dm

@@ -51,6 +51,13 @@
 /mob/proc/get_num_legs()
 	return 2
 
+/mob/proc/get_leg_ignore()
+	return 0
+
+/mob/living/carbon/human/get_leg_ignore()
+	if(FLYING in dna.species.specflags)
+		return 1
+
 /mob/living/carbon/human/get_num_arms()
 	. = 0
 	for(var/X in bodyparts)