patch-kernel script usage help

[Damjan Lango]

Hi,

Would you consider applying this patch that adds a little usage help
to the patch-kernel script if the Makefile isn't found or if it is
given -h or --help options:

ciao
Damjan

diff -u patch-kernel-orig patch-kernel
--- patch-kernel-orig	Tue Feb 26 11:15:53 2002
+++ patch-kernel	Tue Feb 26 11:31:42 2002
@@ -46,6 +46,15 @@
 patchdir=${2-.}
 stopvers=${3-imnotaversion}
 
+if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then
+cat << USAGE
+usage: patch-kernel [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
+  The source directory defaults to /usr/src/linux, and
+  the patch directory defaults to the current directory.
+USAGE
+exit 1
+fi
+
 # See if we have any -ac options
 for PARM in $*
 do