Fix for broken Mail App in OSX Mountain Lion. https://mail.kde.org/pipermail/owncloud/2012-August/004649.html

3rdparty/Sabre/CardDAV/Plugin.php

@@ -153,6 +153,9 @@ class Sabre_CardDAV_Plugin extends Sabre_DAV_ServerPlugin {
 
                 // Taking out \r to not screw up the xml output
                 $returnedProperties[200][$addressDataProp] = str_replace("\r","", $val);
+                // The stripping of \r breaks the Mail App in OSX Mountain Lion
+                // this is fixed in master, but not backported. /Tanghus
+                $returnedProperties[200][$addressDataProp] = $val;
 
             }
         }