Also include generated doc in archive.
Remove "verbose" flag from tar generation.
This file looks unused.
Remove now unused file.
Sort file names.
Add more missing files to the archive.
File looks unused too.  Remove it.
Improve message.
Disable bittorrent/parallel tests in release mode.

These tests are known to fail *sometimes*.  Define environment variable SG_EXENV to
"true", so that the tests fail consistently, and "make distcheck" succeeds.
Remove remaining trace of chord_before_dsend.
Add more missing files to the archive.
Add the HelloWorld example to the doc.
Sort file names.
Correclty distribute the lua/{bittorrent,kademlia} examples.
Don't know what this file is for.  Just delete it!.
Merge branch 'v3_9_x'