GitLab

discussion on jabber.

Conflicts:
	src/bin/sockcreator/Makefile.am

Meaning if it works, don't try the others. Also, a little comment in
test was added.

https://sourceforge.net/projects/asio/files/asio/1.5.2%20%28Development%29/
* Cleaned up the handling of errors reported by the `close()` system call. In particular, assume that most operating systems won't have `close()` fail with `EWOULDBLOCK`, but if it does then set the blocking mode and restart the call. If any other error occurs, assume the descriptor is closed.

Previous versions uncoditionally made sockets blocking on close(), which
was propagated to other processes that share the same socket.
It (could) subsequently cause a hangup-like situation.

https://sourceforge.net/projects/asio/files/asio/1.5.1%20%28Development%29/
* Fixed a bug on kqueue-based platforms, where reactor read operations that return false from their perform() function are not correctly re-registered with kqueue.
This is necessary for multiple processes sharing the same socket to both
accept queries.

tests were slightly adjusted accordingly.

expansion.  extended tests to check this case.

found by a report in bind10-users.  fix okayed on jabber.