echo_server tevent_req sample code

[Jeremy Allison]

On Tue, Jul 30, 2013 at 02:47:38PM +0200, Volker Lendecke wrote:
> Hi!
> 
> Attached find sample code file for lib/tevent that
> implements a self-contained echo server. I would like to
> publish this with a permissive license, so that anybody can
> make use of it. I copied tevent_req_is_unix_error, according
> to git blame this is exclusively my code, so I should be
> able to relicense. I need to find out how to weave this into
> the doxygen documentation. Then I would thoroughly extend
> its documentation to make it a "best practices" starting
> point for tevent_req use. Possibly a simple echo client
> doing parallel client connects could follow.
> 
> Comments?

Very nice - thanks for doing this ! Let me know
how and when you want to merge this into the
master branch.

Cheers,

	Jeremy.