[PATCH] reconfigure.pl option 'target' is accessed as 'targets'

[Maria Fedotova]

Hello folks,
There was a problem in config/gen/makefiles.pm:
    $targets = $conf->options->get('targets');
while the option name was 'target'.

I've restored correct access and slightly improved the option
description. Could anyone review and possibly commit the patch? Is the
[PATCH] mail formed correctly?

Thanks, M.