[Twisted-Python] Re: distrib.UserDirectory improvements

[Paul Boehm]

the reason i've written this:
apache allows you to have user html dirs outside of the homedir,
which is useful when you don't want +x homedirs.

this patch modifies userdirectory so that it's backwards compatible,
but when the constructor is called with different paths,
it behaves like apache.

that is: anything that starts with a ~, is in the users homedir
(~/public_html, and ~/.twistd-web-pb being the defaults)
and everything else is an absolute path.

  paul