support configuration as first argument

diff --git a/t/ldap-rewrite.pl b/t/ldap-rewrite.pl
index e5cc3eb..147a1ad 100755 (executable)
--- a/t/ldap-rewrite.pl
+++ b/t/ldap-rewrite.pl
@@ -11,7 +11,7 @@ BEGIN {
 }
 
 our $config;
-ok( require "t/config.pl", 'config.pl' );
+ok( require( ( shift @ARGV || 't/config.pl' ) ), 'config.pl' );
 
 sub ldap_check_error {
        my $o = shift;