machinery_process() & auto_use_power efficiency tweaks (#2657)

changes:

Machinery now uses machinery_process() instead of process(), allowing machines to be put into SSprocessing-style lists in addition to the machinery list.
Automatic power calculations now involve less proc-calls.

code/modules/hydroponics/beekeeping/beehive.dm

@@ -133,7 +133,7 @@
 			user << "<span class='notice'>You take all filled honeycombs out.</span>"
 		return
 
-/obj/machinery/beehive/process()
+/obj/machinery/beehive/machinery_process()
 	if(closed && !smoked && bee_count)
 		pollinate_flowers()
 		update_icon()

code/modules/hydroponics/seed_machines.dm

@@ -50,7 +50,7 @@
 	var/failed_task = 0
 	var/disk_needs_genes = 0
 
-/obj/machinery/botany/process()
+/obj/machinery/botany/machinery_process()
 
 	..()
 	if(!active) return

code/modules/hydroponics/trays/tray_apiary.dm

@@ -108,7 +108,7 @@
 	else
 		return 0
 
-/obj/machinery/apiary/process()
+/obj/machinery/apiary/machinery_process()
 
 	if(swarming > 0)
 		swarming -= 1

code/modules/hydroponics/trays/tray_process.dm

@@ -1,4 +1,4 @@
-/obj/machinery/portable_atmospherics/hydroponics/process()
+/obj/machinery/portable_atmospherics/hydroponics/machinery_process()
 
 	// Handle nearby smoke if any.
 	for(var/obj/effect/effect/smoke/chem/smoke in view(1, src))

code/modules/hydroponics/trays/tray_soil.dm

@@ -64,7 +64,7 @@
 /obj/machinery/portable_atmospherics/hydroponics/soil/invisible/die()
 	qdel(src)
 
-/obj/machinery/portable_atmospherics/hydroponics/soil/invisible/process()
+/obj/machinery/portable_atmospherics/hydroponics/soil/invisible/machinery_process()
 	if(!seed)
 		qdel(src)
 		return