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.

Makefile

@@ -23,7 +23,7 @@ ROMS := pokered.gbc pokeblue.gbc
 
 # generate dependencies for each object
 $(shell $(foreach obj, $(OBJS), \
-	$(eval $(obj:.o=)_DEPENDENCIES := $(shell $(PYTHON) extras/pokemontools/scan_includes.py $(obj:.o=.asm) | sed s/globals.asm//g)) \
+	$(eval $(obj:.o=)_DEPENDENCIES := $(shell $(PYTHON) extras/pokemontools/scan_includes.py $(obj:.o=.asm))) \
 ))
 $(shell $(foreach obj, $(OBJS), \
 	$(eval ALL_DEPENDENCIES += $($(obj:.o=)_DEPENDENCIES)) \
@@ -41,7 +41,6 @@ redrle: extras/redtools/redrle.c
 clean:
 	rm -f $(ROMS)
 	rm -f $(OBJS)
-	rm -f globals.asm
 	@echo "removing *.tx" && find . -iname '*.tx' -exec rm {} +
 	rm -f redrle
 
@@ -51,23 +50,19 @@ baserom.gbc: ;
 
 %.asm: ;
 .asm.tx:
-	$(eval TEXTQUEUE := $(TEXTQUEUE) $<)
+	$(eval TEXTQUEUE += $<)
 	@rm -f $@
 
-globals.asm: $(ALL_DEPENDENCIES:.asm=.tx) $(OBJS:.o=.tx)
-	@touch $@
-	@$(PYTHON) prequeue.py $(TEXTQUEUE)
-globals.tx: globals.asm
-	@cp $< $@
-
 $(OBJS): $$*.tx $$(patsubst %.asm, %.tx, $$($$*_DEPENDENCIES))
+	@$(PYTHON) prequeue.py $(TEXTQUEUE)
+	@$(eval TEXTQUEUE :=)
 	rgbasm -o $@ $*.tx
 
-pokered.gbc: globals.tx $(RED_OBJS)
+pokered.gbc: $(RED_OBJS)
 	rgblink -n $*.sym -m $*.map -o $@ $(RED_OBJS)
 	rgbfix -jsv -k 01 -l 0x33 -m 0x13 -p 0 -r 03 -t "POKEMON RED" $@
 
-pokeblue.gbc: globals.tx $(BLUE_OBJS)
+pokeblue.gbc: $(BLUE_OBJS)
 	rgblink -n $*.sym -m $*.map -o $@ $(BLUE_OBJS)
 	rgbfix -jsv -k 01 -l 0x33 -m 0x13 -p 0 -r 03 -t "POKEMON BLUE" $@