kpatch: update the kpatch version and the man

kpatch/kpatch

@@ -25,6 +25,7 @@
 
 INSTALLDIR=/var/lib/kpatch
 SCRIPTDIR="$(readlink -f $(dirname $(type -p $0)))"
+VERSION="0.1.9"
 
 usage_cmd() {
 	printf '   %-20s\n      %s\n' "$1" "$2" >&2
@@ -48,6 +49,8 @@ usage () {
 	usage_cmd "info <module>" "show information about a patch module"
 	echo >&2
 	usage_cmd "list" "list installed patch modules"
+	echo >&2
+	usage_cmd "version" "display the kpatch version"
 	exit 1
 }
 
@@ -276,6 +279,10 @@ case "$1" in
 	usage
 	;;
 
+"version"|"-v"|"--version")
+	echo "$VERSION"
+	;;
+
 *)
 	echo "subcommand $1 not recognized"
 	usage

man/kpatch.1

@@ -38,6 +38,9 @@ info <module>
 list
        list installed patch modules
 
+version
+       display the kpatch version
+
 .SH SEE ALSO
 kpatch-build(1)
 .SH BUGS