Create post-HADVAs expect files

Create post-HADVAs expect files

Summary:
When an HHVM unit test prints a varray or darray, its output will change with the HADVAs flag, but not in a particularly meaningful way. We could avoid these changes by adding marking calls to the tests, but that would make the test code complicated for no reason. We also don't want to make "automarking" the new default test mode.

Instead, I've applied the diffs to the current expect files to get a new set of post-HADVAs expect files. The existing HADVAs contbuild will use these files rather than the base expect files. It no longer needs to do automarking. After we flip the flag, we'll unconditionally use these files when they're available. As a cleanup diff, we'll replace the old dvarray expect files. Of our ~15k tests, ~2k need post-HADVAs expect files.

In addition to all the new files, see the test runner change in hphp/test/run.php.

Reviewed By: dneiter

Differential Revision: D26947715

fbshipit-source-id: af28f5e066795fd22f528c063447e882372cb76e