Add mkrelease helper.

diff --git a/support/mkrelease b/support/mkrelease
new file mode 100755 (executable)
index 0000000..df3b2e4
--- /dev/null
+++ b/support/mkrelease
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+sh debian/createcopyright.sh >debian/copyright
+dpkg-buildpackage -rfakeroot -b -us -uc
+dh_clean