use files from packages/ as specified in packages/list

FossilOrigin-Name: 3a28598bb8dbe07f98b69c9e4e44e2c7e59249720e86e2b6cb3553ff07622f59

Makefile

@@ -21,7 +21,6 @@ toolchain: dirs bin/retro-embedimage bin/retro-extend bin/retro-injectimage-js b
 
 dirs:
 	mkdir -p bin
-	mkdir -p packages
 
 clean:
 	rm -f bin/*
@@ -124,7 +123,7 @@ bin/retro-ri: io bin/retro-embedimage bin/retro-extend interfaces/ri_image.c int
 bin/retro: io bin/retro-embedimage bin/retro-extend interfaces/image.c interfaces/rre.c interfaces/rre.forth interfaces/image-functions.o interfaces/io/rng.forth
 	cp ngaImage rre.image
 	./bin/retro-extend rre.image interfaces/io/io_filesystem.forth interfaces/io/io_gopher.forth interfaces/io/io_floatingpoint.forth interfaces/io/io_unix_syscalls.forth interfaces/io/rng.forth interfaces/rre.forth
-	find packages/ -name "*.forth" -type f -exec ./bin/retro-extend rre.image {} \; 
+	cd packages/ && xargs -L1 ../bin/retro-extend ../rre.image <list
 	./bin/retro-embedimage rre.image >interfaces/rre_image.c
 	rm rre.image
 	cd interfaces && $(CC) $(CFLAGS) $(LDFLAGS) -o ../bin/retro $(LIBM) rre.c image-functions.o $(RREIO)