Use shell builtins instead of awk and sed.

Avoids problems with awk processing floating point numbers when LC_NUMERIC
give a decimal point of ','.
Fixes PR/42321

sys/conf/osrelease.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-#	$NetBSD: osrelease.sh,v 1.117 2009/10/29 06:33:27 apb Exp $
+#	$NetBSD: osrelease.sh,v 1.118 2009/11/15 13:39:00 dsl Exp $
 #
 # Copyright (c) 1997 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -32,28 +32,43 @@
 
 # We use the number specified in <sys/param.h>
 
-AWK=${AWK:-awk}
+path="./$0"
-SED=${TOOL_SED:-sed}
+exec < ${path%/*}/../sys/param.h
-PARAMH="`dirname $0`"/../sys/param.h
-release=`$AWK '/^#define[ 	]*__NetBSD_Version__/ { print $6 }' $PARAMH`
 
-# default: return nn.nn.nn
+while
-# -m: return nn, representing only the major number; however, for -current,
+	read define ver_tag release comment || exit 1
+do
+	[ "$define" = "#define" ] || continue;
+	[ "$ver_tag" = "__NetBSD_Version__" ] || continue
+	break
+done
+
+# ${release} is [M]Mmm00pp00
+#
+# default: return MM.mm.pp
+# -m: return MM, representing only the major number; however, for -current,
 #     return the next major number (e.g. for 5.99.nn, return 6)
-# -n: return nn.nn
+# -n: return MM.mm
-# -s: return nnnnnn (no dots)
+# -s: return MMmmpp (no dots)
+
+release=${release%??}
+
+rel_MMmm=${release%????}
+rel_MM=${rel_MMmm%??}
+rel_mm=${rel_MMmm#${rel_MM}}
+rel_pp=${release#${rel_MMmm}00}
 
 case $1 in
 -m)
-	echo $release | $AWK -F. '{print int($1+$2/100+0.01)}'
+	echo "$(((${rel_MMmm}+1)/100))"
 	;;
 -n)
-	echo $release | $AWK -F. '{print $1 "." $2}'
+	echo "$rel_MM.$rel_mm"
 	;;
 -s)
-	echo $release | $SED -e 's,\.,,g'
+	echo "$rel_MM$rel_mm$rel_pp"
 	;;
 *)
-	echo $release
+	echo "$rel_MM.$rel_mm.$rel_pp"
 	;;
 esac