Add basic data structures that will allow us to move named semaphore support out of the OS and into the VFS (not complete).

Add basic data structures that will allow us to move named semaphore support out of the OS and into the VFS (not complete).

fs/poll:  More typo fixes.  Now I understand.  It was not really being built in the configuration that I was using

Fix unecessary delays and timing jitter in the implementation of poll(): No delay if timeout is zero; If timeout is greater than zero, first check if events are already pending events before starting the delay.  From Johannes Hampel