UBUNTU: [Packaging] getabis -- support parsing a simple version

BugLink: http://bugs.launchpad.net/bugs/1806380Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

debian/scripts/misc/getabis

@@ -2,7 +2,11 @@
 
 export LC_ALL=C.UTF-8
 
+if [ "$#" = "1" ]; then
+	set - $(echo "$1" | sed -e 's/-/ /')
+fi
 if [ "$#" != "2" ]; then
+	echo "Usage: $0 <version>" 1>&2
 	echo "Usage: $0 <release> <revision>" 1>&2
 	exit 1
 fi