Update m4 from 1.4 to 1.4.4.

sysa/m4-1.4.4/mk/main.mk

@@ -0,0 +1,33 @@
+PRODUCT = m4
+VERSION = 1.4
+
+CC      = tcc
+LD      = tcc
+AR      = tcc -ar
+
+CFLAGS  = -I lib \
+          -DPRODUCT=\"$(PRODUCT)\" \
+          -DVERSION=\"$(VERSION)\" \
+          -DHAVE_SIGNAL_H=1 \
+          -DPACKAGE_STRING=\"GNU\ M4\ 1.4.4\"
+
+LDFLAGS = -L . -lm4
+
+.PHONY: all
+
+LIB_SRC = regex getopt getopt1 error obstack xmalloc xstrdup
+LIB_OBJECTS = $(addprefix lib/, $(addsuffix .o, $(LIB_SRC)))
+
+M4_SRC = m4 builtin debug eval format freeze input macro output path symtab
+M4_OBJ = $(addprefix src/, $(addsuffix .o, $(M4_SRC)))
+
+all: m4
+
+m4: libm4.a $(M4_OBJ)
+	$(CC) $(CFLAGS) $^ $(LDFLAGS) -o $@
+
+libm4.a: $(LIB_OBJECTS)
+	$(AR) cr $@ $^
+
+install: all
+	install m4 $(PREFIX)/bin