[w3m-dev 03664] config.param is clear when configure -help

* configure: config.param created after arg parsing
From: Hironori SAKAMOTO <hsaka@mth.biglobe.ne.jp>

configure

@@ -1,5 +1,5 @@
 #!/bin/sh
-# $Id: configure,v 1.91 2002/12/13 02:27:23 ukai Exp $
+# $Id: configure,v 1.92 2003/01/21 15:33:19 ukai Exp $
 #	Configuration.
 #
 
@@ -29,8 +29,6 @@ if [ -f config.param ] ; then
 	fi
 fi
 
-echo "# Configuration at $host" > config.param
-
 # parameters:
 
 prefix=/usr/local
@@ -150,6 +148,9 @@ do
   shift
 done
 
+mv -f config.param config.param.bak
+echo "# Configuration at $host" > config.param
+
 if [ "x$IMLIB_CONFIG" = x ]; then
   IMLIB_CONFIG=imlib-config
 fi