1.8 $mybb->get_input for arrays

[ATofighi]

hi,
now we can use $mybb->get_input('xyz') instead of $mybb->input['xyz']
but we can't use $mybb->get_input instead of $mybb->input['abc']['xyz']

I think $mybb->get_input should also support these type of inputs.
for example $mybb->get_input('abc.xyz') = $mybb->input['abc']['xyz']

[Destroy666]

I think the function should accept array instead of separating it with dot, for example $mybb->get_input(array('abc', 'xyz')) or $mybb->get_input(array('abc', 'xyz', '123')) for bigger depth.