Fix so exported vCard specifies encoding in v3-compatible format (#1489183)

Aleksander Machniak

2013-06-18 dd12eec622a0508bc579e2c839439ebde7bb423b

 program/lib/Roundcube/rcube_vcard.php

@@ -714,9 +714,15 @@
                            $value[] = $attrvalues;
                        }
                        else if (is_bool($attrvalues)) {
                            // true means just tag, not tag=value, as in PHOTO;BASE64:...
                            // true means just a tag, not tag=value, as in PHOTO;BASE64:...
                            if ($attrvalues) {
                                $attr .= strtoupper(";$attrname");
                                // vCard v3 uses ENCODING=B (#1489183)
                                if ($attrname == 'base64') {
                                    $attr .= ";ENCODING=B";
                                }
                                else {
                                    $attr .= strtoupper(";$attrname");
                                }
                            }
                        }
                        else {