Add Windows release script

tools/make-windows-releases

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -eu
+
+for arch in 'i686' 'x86_64'; do
+	make -j CC=${arch}-w64-mingw32-gcc
+	dir=xpack-$(git describe --tags | tr -d v)-windows-${arch}-bin
+	rm -rf $dir ${dir}.zip
+	mkdir $dir
+	cp libxpack.dll libxpack.lib libxpack.h *.exe $dir
+	${arch}-w64-mingw32-strip ${dir}/libxpack.dll ${dir}/*.exe
+	for file in COPYING; do
+		sed < $file > ${dir}/${file}.txt -e 's/$/\r/g'
+	done
+	for file in README.md; do
+		sed < $file > ${dir}/${file} -e 's/$/\r/g'
+	done
+	(cd ${dir} && zip -r ../${dir}.zip .)
+done