ObjFW  History of src/OFKernelEventObserver_kqueue.h of bfc99fa4aced77fb

Forgot to add 2017, even though I already did quite some changes in
2017. file: [1b92bd6059] check-in: [44f45c2e35] user: js, branch: trunk, size: 822 [annotate] [blame] [check-ins using] [diff]

While at it, also update the mail address. file: [5afd4d6583] check-in: [2a27cf3000] user: js, branch: trunk, size: 816 [annotate] [blame] [check-ins using] [diff]

This moves the locked queue for actions to
OFKernelEventObserver_LockedQueue, which is now used for select and
poll, but skipped for kqueue and epoll, as they natively support changes
from another thread.

This fixes the problem that removing an object is delayed until the next
observe call - at which point it might have already been closed, meaning
the fd is no longer available. This was mainly a problem with kqueue, as
closing the fd already removed it from the kqueue, which then resulted
in an error being returned when trying to manually remove the fd from
the kqueue. file: [e4af935bfd] check-in: [e9b4700cb6] user: js, branch: trunk, size: 812 [annotate] [blame] [check-ins using] [diff]

Not retaining them caused kevent() to be called on an invalid fd. file: [ca9db11f7c] check-in: [1dbe9a4e4e] user: js, branch: trunk, size: 794 [annotate] [blame] [check-ins using] [diff]