VMM/Config: LazyConfigOption.__init__() cast 'default' to 'cls'.
If the default value is not None, make sure it has the proper type.
.. set references to other manpages and set links in the html output
.. |vmm(1)| replace:: **vmm**\(1)
.. _vmm(1): vmm.1
.. |vmm.cfg(5)| replace:: **vmm.cfg**\(5)
.. _vmm.cfg(5): vmm.cfg.5
.. non vmm
.. |postconf(1)| replace:: **postconf**\(1)
.. _postconf(1): http://www.postfix.org/postconf.1.html
.. |transport(5)| replace:: **transport**\(5)
.. _transport(5): http://www.postfix.org/transport.5.html
.. #EOF