This compatibility-breaking change introduces the --cover-memorymap
switch to import-trace. It makes a previous behavior optional, which
enforces DB entries for addresses covered by the --memorymap that
don't occur in the trace. This creates a continuous and potentially
very large fault space in the DB, which never made any real sense.
Change-Id: I47e412bb621b595748c1772e02d2577308be8664
3b7404de43