Add m4 1.4.12 but leave 1.4.9 as its GPLv2

meta/packages/m4/m4_1.4.12.bb

@@ -0,0 +1,13 @@
+DESCRIPTION = "GNU m4 is an implementation of the traditional Unix macro \
+processor."
+LICENSE = "GPLv3"
+SRC_URI = "${GNU_MIRROR}/m4/m4-${PV}.tar.gz"
+S = "${WORKDIR}/m4-${PV}"
+
+inherit autotools
+
+EXTRA_OEMAKE += "'infodir=${infodir}'"
+
+do_configure() {
+	oe_runconf
+}

meta/packages/m4/m4_1.4.9.bb

@@ -1,6 +1,6 @@
 DESCRIPTION = "GNU m4 is an implementation of the traditional Unix macro \
 processor."
-LICENSE = "GPL"
+LICENSE = "GPLv2"
 SRC_URI = "${GNU_MIRROR}/m4/m4-${PV}.tar.gz"
 S = "${WORKDIR}/m4-${PV}"