Mário Pereira authored Oct 10, 2018 and Guillaume Melquiond committed Oct 19, 2018

 . Moved [ity_affected], [pv_affected], and [pvs_affected] from src/mlw/vc.ml to
   src/mlw/ity.ml. These are also declared in src/mlw/ity.mli;

 . the test for conflicting reads and writes effects now uses the [pvs_affected]
   function.