Allow signed integers in kernelconfig

The following patch makes it possible to have signed integers
for kernel configuration parameters (this was allowed before
2.4.21).

/Mikael

diff -u -ru linux/scripts/Configure linux_patch/scripts/Configure
--- linux/scripts/Configure	Fri Jun 13 16:51:39 2003
+++ linux_patch/scripts/Configure	Wed Jul  2 14:43:19 2003
@@ -350,7 +350,7 @@
 	def=${old:-$3}
 	while :; do
 	  readln "$1 ($2) [$def] " "$def" "$old"
-	  if expr "$ans" : '[0-9]*$' > /dev/null; then
+	  if expr "$ans" : '[+-]\?[0-9]*$' > /dev/null; then
             define_int "$2" "$ans"
 	    break
           else


-
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