Changes in v2 by Sebastian Lackner <sebastian@fds-team.de>:
* Update to Liberation Sans version 1.07.4

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>

Signed-off-by: Michael Müller <michael@fds-team.de>

server: Create esync file descriptors for true file objects and use them for directory change notifications.

Just semaphores and mutexes thus far.

We don't have to worry about races because this is just a hint: we still call read() eventually.

The primary function is to check for races. The secondary function is to measure performance.