Improving XHProf support. At the end of a request with XHProf enabled, it will output the link to see the profiling info. New --xhprof option to archive.php, and enabling XHProf when &xhprof=1 is found in the request.
Removing code that seems wrong and does not fail any test when removed
More resilient check
When CLI mode, display errors without HTML
Merge remote-tracking branch 'origin/master'