Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.Approved by: re (implicit)Sponsored by: The FreeBSD Foundation
Copy head to stable/9 as part of 9.0-RELEASE release cycle.Approved by: re (implicit)
Add missing headers. While there, arrange headers alphabetically.MFC after: 3 days
Fix compiling.
Add code to test POSIX message queue.