Add GLOB_BRACE option for better pattern searches.

I'm basically trying to do something like this:
~~~ php
Libraries::paths(array(
	'rules' => array(
		'{:library}\extensions\test\rules\{:class}\{:name}',
		'{:library}\test\rules\{:class}\{:name}' => array('libraries' => 'li3_quality'),
	),
	'ruleSets' => array(
		'{:library}\test\*{rules,defaultRules}',
	),
));
$ruleSets = Libraries::locate('ruleSets', null, array(
	'recursive' => false,
	'suffix' => '.json',
	'preFilter' => '/(r|defaultR)ules\.json/',
	'format' => false,
));
~~~

This sets priority and better matching.