Rewrite relative URIs in CSS by default (adjusted test accordingly)

Minify.php: + 'rewriteCssUris' option
Controller/Base.php: + 'rewriteCssUris' default value
Controller/Version1.php: moved rewriting to serve()
Minify/CSS.php: renamed option 'currentPath' to 'currentDir'
Minify/Source.php: made $filepath public

lib/Minify/Controller/Base.php

@@ -48,7 +48,8 @@ abstract class Minify_Controller_Base {
             ,'encodeLevel' => 9
             ,'minifierOptions' => array() // no minifier options
             ,'contentTypeCharset' => 'UTF-8'
-            ,'maxAge' => 1800 // 30 minutes
+            ,'maxAge' => 1800 // 30 minutes
+            ,'rewriteCssUris' => true
             ,'quiet' => false // serve() will send headers and output
             ,'debug' => false