Default autoload function __autoload() is expected to be set already

[adriaangraas]

It would be nice if Roundcube could be integrated into other programs, without to much of code hacks. For example, it can include a bootstrap of another framework, which allows to check for username/password and such to automate a login. Often such a framework has a own autoloader, which causes the _ _autoload() to be unset. Therefore, set spl_autoload_register to set _ _autoload() (space between _,because of the markup of this editor) as the default function. It's not really an overhead.

You said you liked patches.

[adriaangraas]

patch

[thomasb]

Done in r2703