Fix issue #481

[nazriel]

Fix issue #481
Again, I am just starting with vibe.d internals so I am not sure if it is the best approach.
Thanks!

[nazriel]

object.Exception@src/rt/minfo.d(129): Aborting: Cycle detected between modules with ctors/dtors:

vibe.http.client -> vibe.http.auth.basic_auth -> vibe.http.server -> vibe.http.dist -> vibe.http.client

Meh 👎
Lets try another way.

Edit:
Seems to be passing on my computer now.
Lets see what Travis CI will say

[s-ludwig]

Ah nice, thanks! Too bad that there is this module constructor cycle. I'll merge it like this for now and look into that later. Would be a pity to duplicate the code there...

[nazriel]

@s-ludwig thanks!