Revert "Remove unused and broken options forwarding from nqp-configure"

This reverts commit b64a286.
I obviously have no idea what I'm doing.

Configure.pl

@@ -54,7 +54,7 @@ BEGIN
     $cfg->set( 'nqp_config_status', join( ' ', map { "\"$_\"" } @ARGV ) );
 
     GetOptions(
-        'help!',
+        $cfg->options,      'help!',
         'prefix=s',         'nqp-home=s',
         'sdkroot=s',        'sysroot=s',
         'backends=s',       'no-clean',