Get rid of globals.asm. Use ::s to export labels between objects.

globals.asm was a hack that:
- gave rgbasm an extra 100k lines to read
- increased reliance on the python preprocessor
- made the makefile a mess
- gave object creation an extra step
- wasn't even necessary

This speeds up build time by at least a third.

text/maps/victory_road_1f.asm

@@ -1,31 +1,31 @@
-_VictoryRoad1BattleText1: ; 85c79 (21:5c79)
+_VictoryRoad1BattleText1:: ; 85c79 (21:5c79)
 	text "I wonder if you"
 	line "are good enough"
 	cont "for me!"
 	done
 
-_VictoryRoad1EndBattleText1: ; 85ca2 (21:5ca2)
+_VictoryRoad1EndBattleText1:: ; 85ca2 (21:5ca2)
 	text "I"
 	line "lost out!"
 	prompt
 
-_VictoryRoad1AfterBattleText1: ; 85caf (21:5caf)
+_VictoryRoad1AfterBattleText1:: ; 85caf (21:5caf)
 	text "I never wanted to"
 	line "lose to anybody!"
 	done
 
-_VictoryRoad1BattleText2: ; 85cd3 (21:5cd3)
+_VictoryRoad1BattleText2:: ; 85cd3 (21:5cd3)
 	text "I can see you're"
 	line "good! Let me see"
 	cont "exactly how good!"
 	done
 
-_VictoryRoad1EndBattleText2: ; 85d07 (21:5d07)
+_VictoryRoad1EndBattleText2:: ; 85d07 (21:5d07)
 	text "I"
 	line "had a chance..."
 	prompt
 
-_VictoryRoad1AfterBattleText2: ; 85d1a (21:5d1a)
+_VictoryRoad1AfterBattleText2:: ; 85d1a (21:5d1a)
 	text "I concede, you're"
 	line "better than me!"
 	done