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/silph_co_5f_1.asm

@@ -1,50 +1,50 @@
-_UnnamedText_1a010: ; 82936 (20:6936)
+_UnnamedText_1a010:: ; 82936 (20:6936)
 	text "TEAM ROCKET is"
 	line "in an uproar over"
 	cont "some intruder."
 	cont "That's you right?"
 	done
 
-_UnnamedText_1a015: ; 82978 (20:6978)
+_UnnamedText_1a015:: ; 82978 (20:6978)
 	text "TEAM ROCKET took"
 	line "off! You're our"
 	cont "hero! Thank you!"
 	done
 
-_SilphCo5BattleText2: ; 829aa (20:69aa)
+_SilphCo5BattleText2:: ; 829aa (20:69aa)
 	text "I heard a kid was"
 	line "wandering around."
 	done
 
-_SilphCo5EndBattleText2: ; 829cf (20:69cf)
+_SilphCo5EndBattleText2:: ; 829cf (20:69cf)
 	text "Boom!"
 	prompt
 
-_SilphCo5AfterBattleText2: ; 829d6 (20:69d6)
+_SilphCo5AfterBattleText2:: ; 829d6 (20:69d6)
 	text "It's not smart"
 	line "to pick a fight"
 	cont "with TEAM ROCKET!"
 	done
 
-_SilphCo5BattleText3: ; 82a07 (20:6a07)
+_SilphCo5BattleText3:: ; 82a07 (20:6a07)
 	text "We study #"
 	line "BALL technology"
 	cont "on this floor!"
 	done
 
-_SilphCo5EndBattleText3: ; 82a32 (20:6a32)
+_SilphCo5EndBattleText3:: ; 82a32 (20:6a32)
 	text "Dang!"
 	line "Blast it!"
 	prompt
 
-_SilphCo5AfterBattleText3: ; 82a43 (20:6a43)
+_SilphCo5AfterBattleText3:: ; 82a43 (20:6a43)
 	text "We worked on the"
 	line "ultimate #"
 	cont "BALL which would"
 	cont "catch anything!"
 	done
 
-_SilphCo5BattleText4: ; 82a81 (20:6a81)
+_SilphCo5BattleText4:: ; 82a81 (20:6a81)
 	text "Whaaat? There"
 	line "shouldn't be any"
 	cont "children here?"