MDL-17458 fixing installation regressions - no output and timeout

admin/index.php

@@ -40,6 +40,7 @@ if (version_compare(phpversion(), '5.2.0') < 0) {
 
 // try to flush everything all the time
 @ob_implicit_flush(true);
+while(@ob_end_clean()); // ob_end_flush prevents sending of headers
 
 require('../config.php');
 require_once($CFG->libdir.'/adminlib.php');    // various admin-only functions

lib/upgradelib.php

@@ -1024,6 +1024,7 @@ function install_core($version, $verbose) {
     global $CFG, $DB;
 
     try {
+        set_time_limit(600);
         print_upgrade_part_start('moodle', true, $verbose); // does not store upgrade running flag
 
         $DB->get_manager()->install_from_xmldb_file("$CFG->libdir/db/install.xml");