florence: Initial recipe added

Florence is a virtual keyboard used to input text with a touchscreen.

Tests:
* Run tested on Overo Gumstix with xfce-nm-image
* Build tested for Qemuarm

NOTICE:
If florence can't find its gconf settings,
you need to start florence with --config and save the configuration once.

Signed-off-by: Samuel Stirtzel <s.stirtzel@googlemail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>