MDL-55921 profiling: Enable util script to be profiled.

Enable util scripts to be profiled again and ensure
that non-util script runs that don't include version.php
are also able to provide some output.

See David's commit for how export ensures version is used.

lib/xhprof/xhprof_moodle.php

@@ -865,7 +865,7 @@ public function save_run($xhprof_data, $type, $run_id = null) {
 
         $DB->insert_record('profiling', $rec);
 
-        if (PHPUNIT_TEST && !PHPUNIT_UTIL) {
+        if (PHPUNIT_TEST) {
             // Calculate export variables.
             $tempdir = 'profiling';
             make_temp_directory($tempdir);