rename lua functions that have changed in all checked in lua scripts

BizHawk.MultiClient/output/Lua/ButtonCount.lua

@@ -104,9 +104,9 @@ end
 reset()
 frames()
 
-if savestate.registerload then
-	savestate.registerload(load)
-	savestate.registersave(save)
+if event.onloadstate then
+	event.onloadstate(load)
+	event.onsavestate(save)
 end
 
 while true do

BizHawk.MultiClient/output/Lua/N64/M64_reader.lua

@@ -195,7 +195,7 @@ while true do
   
   if finished then
     console.output("Movie finished")
-    emu.pause()
+    client.pause()
     return
   end