Remove stray line of debug output.
Follow-on to 384bc7afc86be706bf61def09afc8306cdad2443 for #2033
Update golden file for XSS test.
Test against 5.2.3, our minimum version.
Also test against 5.3, 5.4 and 5.5 to be forward looking
Travis doesn't have PHP 5.2.3.  Test against 5.3 / 5.4 / 5.5.