+ Solar_Dir for better PHP compat. Moved most of minify.php code to Controller/Version1.php. + a few tests for version1/minify.php

lib/Minify/Controller/Groups.php

@@ -51,6 +51,10 @@ class Minify_Controller_Groups extends Minify_Controller_Base {
         }
         $sources = array();
         foreach ($groups[$pi] as $file) {
+            if ($file instanceof Minify_Source) {
+                $sources[] = $file;
+                continue;
+            }
             $file = realpath($file);
             if (file_exists($file)) {
                 $sources[] = new Minify_Source(array(