added patch download subc to makefile

make.project/download_patches.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+function echofail() {
+	echo "FAILED: $1"
+	exit 1
+}
+
+wget \
+	-q \
+	--show-progress \
+	--continue \
+	-R "index.html*" \
+	-r \
+	-np \
+	-nH \
+	--cut-dirs=2 \
+	-P ${dir_patches} \
+	--directory-prefix=${dir_patches} \
+	https://storage.darkhorselinux.org/sources/upstream_patches/ \
+	|| echofail "Downloading patches..."
+
+
+echo "Validating source downloads..."
+pushd ${dir_patches} 1>/dev/null 2>/dev/null
+
+md5sum --quiet -c "md5sums.txt" || echofail "Validation failed.  Redownload."
+err=$?
+popd 1>/dev/null 2>/dev/null
+
+echo "Finished with exit code $err"