Validate multi dimensional array

[evtaylor]

See http://dev.kohanaframework.org/issues/4035

$array = array(
    'user' => array(
        'name' => 'Evan'
    )
);

$validation = Validation::factory($array)
    ->rule('user.name', 'not_empty'); 

[rjd22]

@evtaylor this needs tests for both the array path as the Validator using the array path.

[arteymix]

If we go multidimensional, what about a * notation to specify all keys within an array?

->rule(`users.*.name`, `not_empty`)

[neo22s]

for 4.0.0 ?