configure: print "Unknown parameter: " error to stderr

Print the "Unknown parameter: " line shown for unrecognized configure
options to stderr; other fatal errors are already directed there.

1 files changed, 1 insertions, 1 deletions

diff --git a/configure b/configure
index fd922f1fed..6bf472e7ba 100755
--- a/configure
+++ b/configure
@@ -1213,7 +1213,7 @@ for ac_option do
         _3dnow=no _3dnowext=no _mmx=no _mmxext=no ;;
 
   *)
-    echo "Unknown parameter: $ac_option"
+    echo "Unknown parameter: $ac_option" >&2
     exit 1
     ;;