in documentation exact path is images/CameraCalibration/VID5

requesting a previously undeclared key is most likely an programming
error. e.g. a typo "--unused vs --unsued".
So throw in those cases.

Add an according failure testcase.

And refactor the code to make sure that the dev and runtime package lists are
in sync.

Because that's the variable actually used by CPack.

fix position of assert expected/actual parameter