Make sure we at least run the test on HHVM (#1862)
Make sure we at least run the test on HHVM (#1862)

* Allow build on HHVM

* Include HHVM

kkopachev/guzzle,Brunty/guzzle,kkopachev/guzzle,Brunty/guzzle,guzzle/guzzle,michabbb-backup/guzzle,guzzle/guzzle,michabbb-backup/guzzle