Remove obsolete stuff.

Signed-off-by: Tobias Lorenz <tobias.lorenz@etas.com>
Support multiple compilation with different ETAS BOA versions.

Signed-off-by: Tobias Lorenz <tobias.lorenz@etas.com>
Several smaller cleanups

Signed-off-by: Tobias Lorenz <tobias.lorenz@etas.com>