move 4klang stuff to separate folder, add fr_public submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "v2/fr_public"]
+	path = v2/fr_public
+	url = https://github.com/PoroCYon/fr_public

4klang/Makefile

@@ -3,14 +3,16 @@ SED ?= sed
 AWK ?= awk
 NASM ?= nasm
 
+MUSDIR ?= mus
+
 default: all
 
 %/:
 	mkdir -p "$@"
 
-obj/4klang.%: mus/4klang.% xlatsection.awk obj/
+obj/4klang.%: $(MUSDIR)/4klang.% xlatsection.awk obj/
 	$(AWK) -f "xlatsection.awk" "$<" > "$@"
-obj/4klang.h: mus/4klang.h obj/
+obj/4klang.h: $(MUSDIR)/4klang.h obj/
 	$(SED) -E 's/extern "C"/EXTERN_C/' "$<" > "$@"
 
 obj/4klang.o: obj/4klang.asm obj/4klang.inc

v2/fr_public

@@ -0,0 +1 @@
+Subproject commit 8c8f82c2ae01133370e649bbc05916e7aceecadd