Groupwildcard

You now can call get() or post() on it and give it all the wanted
input variables

* 'master' of git://github.com/Aorimn/dokuwiki:
  Change default groupwildcards option to 0 not to change behavior of
  Added support for the %GROUP% wildcard.

Conflicts:
	inc/auth.php

input validations in installer

The test suite was missing a global keyword to access the $INPUT class.

This allows to treat empty parameters as default

This new wrapper ensures types are correct and accessed parameters are
actually set (with custom default fallbacks).

The wrapper is available in the global $INPUT variable. It accesses
$_REQUEST by default. If POST or GET is required, the post and get
members can be used:

$INPUT->int('foo',false); // access $_REQUEST['foo'], default false
$INPUT->post->int('foo'); // access $_POST['foo'], default 0
$INPUT->get->int('foo'); // access $_GET['foo'], default 0

The codebase still needs to be updated to make use of this.