buildroot

matchbox-common was missing in Config.in

While at it add option to install PDA style desktop folders.

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>