Merge from trunk:

* Update copyright notice.

* Version bump.

* Fix out-of-bounds address_v4::broadcast() return value on 64-bit systems.

* Use correct interrupt method when timerfd is not available. Fixes #5045


[SVN r68200]

libs/asio

@@ -1 +1 @@
-Subproject commit 009e6a0c02ffe93678e00f6f31cd2dadd7196e2c
+Subproject commit 28ab37a23e9e64914fa548e1c25b7caa76f527a7