RnD & Cat fixes (#1913)

changes:

bugfix: "Fixed an issue where some objects could not be deconstructed with RnD."
bugfix: "Helmet lights now actually display the powered-on sprite."
bugfix: "Cats on heads no longer magically turn invisible."
bugfix: "Cyborgs' portable destructive analyzer can no longer steal intercoms or the captain's safe."
imageadd: "Duffle (duffel?) bags now have in-hand sprites."
Fixes #1158 
Fixes #1662

code/modules/projectiles/guns/energy/special.dm

@@ -373,7 +373,7 @@
 	icon = 'icons/obj/vaurca_items.dmi'
 	icon_state = "thermaldrill"
 	item_state = "thermaldrill"
-	origin_tech = "combat=6;phorontech=8,"
+	origin_tech = list(TECH_COMBAT = 6, TECH_PHORON = 8)
 	fire_sound = 'sound/magic/lightningbolt.ogg'
 	slot_flags = SLOT_BACK
 	w_class = 4

code/modules/projectiles/guns/projectile/pistol.dm

@@ -77,7 +77,7 @@
 	magazine_type = /obj/item/ammo_magazine/t40
 	allowed_magazines = list(/obj/item/ammo_magazine/t40)
 	caliber = "10mm"
-	origin_tech = "combat=3;materials=2"
+	origin_tech = list(TECH_COMBAT = 3, TECH_MATERIAL = 2)
 	fire_sound = 'sound/weapons/Gunshot_light.ogg'
 	load_method = MAGAZINE
 	sel_mode = 1