Removed erroneous +.
(Patched manually since configure.in not yet ported to autoconf 2.0.)
diff --git a/configure b/configure
index b864617..6e26a4b 100755
--- a/configure
+++ b/configure
@@ -1635,7 +1635,7 @@
 fi
 rm -f conftest*
 
-+ test -n "$silent" || echo "checking for setpgrp"
+test -n "$silent" || echo "checking for setpgrp"
 cat > conftest.${ac_ext} <<EOF
 #include "confdefs.h"
 #include <ctype.h>