Some maintenance script cleanup

- Create super-script flush.php
- Rename old scripts with old- prefix.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1574 48356398-32a2-884e-a903-53898d9a118a

maintenance/generate-schema-cache.php

@@ -15,11 +15,6 @@ assertCli();
 $target = '../library/HTMLPurifier/ConfigSchema/schema.ser';
 $FS = new FSTools();
 
-if (file_exists($target)) {
-    echo "Delete HTMLPurifier/ConfigSchema/schema.ser before running this script.";
-    exit;
-}
-
 $files = $FS->globr('../library/HTMLPurifier/ConfigSchema', '*.txt');
 
 $namespaces = array();
@@ -42,4 +37,6 @@ $schema  = new HTMLPurifier_ConfigSchema();
 foreach ($namespaces as $hash) $adapter->adapt($hash, $schema);
 foreach ($directives as $hash) $adapter->adapt($hash, $schema);
 
+echo "Saving schema... ";
 file_put_contents($target, serialize($schema));
+echo "done!\n";