Fix directory exists error.
Drop copy of module "uuid", which is is the std-lib now.
Fix ImportError in upnp.core.uuid: : Must use absolute import for uuid.
Display deprecation message for extern.louie only once.

I see no real use in displaying it on almost every connect,
disconnect and signal. I think its enough to display the message
once when the module is imported. This is especially true as this
module will not go away anytime "soon", as the message suggests.
Update README: Title, markup and line-width.
Remove redundant code.
Mark stuff not used elsewhere as private ('-' prefix).
Fix minor error.

Introduced in 2013-09-13Z22:42:20Th.goebel@crazy-compilers.com
Remove old own implementation of twisted.web.static.File.
fix smal error introduced in c0902639caed7abb8b74b6f26e543483396f9ba3