Merge pull request #419 from wonko/wonko-add-only-same-schema-fks

Restrict the FK check if needed

bin/pt-online-schema-change

@@ -8995,6 +8995,7 @@ sub main {
          tbl    => $orig_tbl,
          Cxn    => $cxn,
          Quoter => $q,
+         only_same_schema_fks => $o->get('only-same-schema-fks'), 
       );
 
    my $vp = VersionParser->new($cxn->dbh());