Fix v1 include dirs

v1/Makefile

@@ -31,7 +31,7 @@ DFLAGS += -g
 #DFLAGS += -DDEBUG_INPUT
 #DFLAGS += -DE6502_DEBUG
 CFLAGS += -DE6502_ILLEGAL
-CFLAGS += $(PFLAGS) -Wall -Werror -Wshadow -Wunused -I../ -Isrc/
+CFLAGS += $(PFLAGS) -Wall -Werror -Wshadow -Wunused -I./ -Isrc/
 CFLAGS += -Iinc/$(PLATFORM)/SDL2
 LDFLAGS += $(PFLAGS)
 LDFLAGS += -Llib/$(PLATFORM)