There were actually isseus getting global corrected FF to run.  Those
have been handled, it's now possible to submit a run with global
corrected ff on the command line.  For example:

./downward-1 --search "flood_hc(heuristics=[ff-global-correction])" < problem
Merge pull request #7 from jordanthayer/master

There were actually isseus getting global corrected FF to run.