put this test back to XFAIL, as it was before, since it is still leaking memory
separate travis jobs for TS and NTS builds
separate travis jobs for debug and non-debug builds
Merge remote-tracking branch 'tyrael/more_travis' into PHP-5.5

* tyrael/more_travis:
  separate travis jobs for debug and non-debug builds
  separate travis jobs for TS and NTS builds
  put this test back to XFAIL, as it was before, since it is still leaking memory