Fix usage message in configure.gnu

diff --git a/configure.gnu b/configure.gnu
index 30af30d..98876cc 100755 (executable)
--- a/configure.gnu
+++ b/configure.gnu
@@ -40,7 +40,7 @@ while test $# -gt 0; do
        case $1 in
     --help)
                cat <<EOM
-Usage: configure [options]
+Usage: configure.gnu [options]
 This is GNU configure-like front end for a metaconfig-generated Configure.
 It emulates the following GNU configure options (must be fully spelled out):
        --help