To remove reliance on global state, pass an "in_planner" argument
to decoMode(). Thus, calls to in_planner() can be removed.
This is a more-or-less automated change. Ultimately it would
probably be better to pass the current deco-mode to the affected
functions instead of calling decoMode() with an in_planner
parameter.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>