minor additions to the manual
fix #971
osproc compiles again for haiku
Merge branch 'devel' of https://github.com/Araq/Nimrod into devel
fix tsemistatic
Merge branch 'devel' of github.com:Araq/Nimrod into devel
tasyncawait now works on Linux.

Reworked detection of a file descriptor being closed with epoll (in the
case of sockets it is when the remote host disconnects). Ensured that
events are only updated when they change.
EOS exception now contains the error code.