adjusted airframe include
Merge branch 'master' of https://github.com/omnetpp/mixim
Extracted method to calculate the nextPosition, which can be used also in the test case. Instead of adding ONE to calculating the nextPosition, we use the post operation for that.
Added type definition for the radioStateAttenuation collection, changed some return value definition to const ref. Using the MapUtils::incNextPosition method for calculating nextPosition.