Add diffstat and quilt contributed by mjw.

Only basic compilation and packaging has been tested.

dev-util/diffstat/diffstat-1.51.bep

@@ -0,0 +1,18 @@
+DESCRIPTION="Display a histogram of diff changes"
+HOMEPAGE="http://invisible-island.net/diffstat/diffstat.html"
+SRC_URI="ftp://invisible-island.net/diffstat/diffstat-1.51.tgz"
+CHECKSUM_MD5="a7d3fd1ba2a9a6c9e2b32e867b5e8792"
+REVISION="1"
+STATUS_HAIKU="stable"
+DEPEND=""
+BUILD {
+	cd diffstat-1.51
+	./configure --prefix=/boot/common
+	make
+}
+
+INSTALL {
+	cd diffstat-1.51
+	make install DESTDIR="${DESTDIR}"
+}
+