add mklua as git dep

Makefile

@@ -1,5 +1,5 @@
 # Generated by mklua
-MKLUA ?= mklua
+MKLUA ?= ./deps/mklua/mklua
 CC ?= cc
 OUTPUT ?= website
 
@@ -36,6 +36,7 @@ all: $(OUTPUT)
 
 clean:
 	rm -fr $(BINDIR) $(MKLUA_OUT) deps/luv
+	rm -fr deps/mklua
 
 compile_flags.txt:
 	printf -- '$(foreach v,$(CCARGS) $(LDARGS),\n$v)' > compile_flags.txt
@@ -43,8 +44,13 @@ compile_flags.txt:
 $(OUTPUT): $(LIBS) $(MKLUA_OUT) $(SOURCES) | $(dir $(OUTPUT))
 	$(CC) $(CCARGS) $(LDARGS) $^ -o $@
 
-$(MKLUA_OUT): $(DEPS) | $(dir $(MKLUA_OUT))
+$(MKLUA_OUT): $(DEPS) | $(dir $(MKLUA_OUT)) $(MKLUA)
 	$(MKLUA) $(MKLUA_FLAGS) $(MKLUA_ENTRY) -o $@
 
+deps/mklua/mklua:
+
+$(MKLUA):
+	git submodule update --init deps/mklua
+	make -C deps/mklua
 %/:
 	mkdir -p $@