travelmate: update to 2.0.5

travelmate: update to 2.0.5

* support the new travelmate option 'macaddr' to use a pre-defined MAC address (per uplink)
* vpn connections are now handled separately for each uplink
* The autoadd-feature for adding open uplinks will now be limited by the 'trm_maxautoadd' option. The default is '5', '0' disables this limitation.
* more code cleanups und optimizations to reduce the repetitive connection handling workload
* bugfixes regarding multiple radio support
* refine cp detection (no longer write and parse an error file)

Signed-off-by: Dirk Brenken <dev@brenken.org>