replace all tabs with four spaces

The PEAR coding standards decree: no tabs, but indent by four spaces.
I've done a global search-and-replace on all tabs, replacing them by
four spaces. This is a huge change, but it will go a long way to
getting us towards phpcs-compliance. And that means better code
readability, and that means more participation.

darcs-hash:20081223191907-84dde-21e8efe210e6d5d54e935a22d0cee5c7bbfc007d.gz

classes/Subscription.php

@@ -44,8 +44,8 @@ class Subscription extends Memcached_DataObject
 
     /* the code above is auto generated do not remove the tag below */
     ###END_AUTOCODE
-	
-	function &pkeyGet($kv) {
-		return Memcached_DataObject::pkeyGet('Subscription', $kv);
-	}
+    
+    function &pkeyGet($kv) {
+        return Memcached_DataObject::pkeyGet('Subscription', $kv);
+    }
 }