[3.1.0] The bulk of autoload support added

- Add FSTools:globr()
- require_once removed from all files
- HTMLPurifier.autoload.php added to register autoload handler
- Removed redundant chdir in maintenance script
- Modified standalone to use HTMLPurifier.includes.php for including stuff
- Added maintenance script remove-require-once.php which we used once and should never use again

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1516 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier.autoload.php

@@ -1,7 +1,7 @@
 <?php
 
 if (function_exists('spl_autoload_register')) {
-  spl_autoload_register(array('HTMLPurifier', 'autoload'));
+  spl_autoload_register(array('HTMLPurifier_Bootstrap', 'autoload'));
 } elseif (!function_exists('__autoload')) {
-  function __autoload($class) {return HTMLPurifier::autoload($class);}
+  function __autoload($class) {return HTMLPurifier_Bootstrap::autoload($class);}
 }