Enhance hh_single_compile_tests

Enhance hh_single_compile_tests

Summary:
- Add tests for `compile_hhas_from_text` added in the last diff (see `test_compile_hhas_from_text` and `record`)
- Better formatting for the testing output, example below
```
Start testing FFIs...

--------------------------------------------
Running test 0
--------------------------------------------
...

--------------------------------------------
Running test 6
--------------------------------------------
Source text:
      <<__EntryPoint>>
      function fatal_prog() {
        var($x);
      }

* Testing parse...
Passed!

* Testing extract_facts...
Passed!

* Testing compile_ffi...
Passed!

* Testing compile_hhas_ffi...
Found 0 functions
Found 0 classes
Found 0 record defs
Found 0 typedefs
Found 0 constants
Found 0 includes
Found 0 constant symbols
Found 0 function symbols
Found 0 class symbols
Passed!

* Testing decls_ffi...
Passed!

Finished all tests
--------------------------------------------
Passed all tests!
```

Reviewed By: shayne-fletcher

Differential Revision: D30858352

fbshipit-source-id: a7c4d39c9368f475a551278ce65213231e11213b