papenmeier driver for newer models: brailleinput support and misc updates

**Reported by halim on 2013-02-14 09:00**
The patch adds brailleInput support for papenmeier BRAILLEX TRIO.
Thx for your help. I used brailleNote driver to learn how it works :-).

Fixes / changes:
- fixed bluetooth support for Trio
- added new implementation of brl_poll method.
