TODO

The point of the system extensions is to provide

1. A set of basic classes (enum, struct, unicode string) for other items to use
2. Processes (creation, enumeration, control)
3. Threading (FOR TS PHP versions ONLY)
4. Sychronization (Mutex, Event, Timer, Semaphore, Wait) - possibly more features
5. Registry
6. Basic Windows information

Additional features such as
1. Windows services
2. pipes, mailslots and other ipc
3. device services, etc

Will end up in other extensions

Synchronization Functions - http://msdn.microsoft.com/en-us/library/windows/desktop/ms686360%28v=vs.85%29.aspx
Processes and Threads - http://msdn.microsoft.com/en-us/library/windows/desktop/ms684847%28v=vs.85%29.aspx

Complete:
Waitable Interface (Partial) 
Mutex
Semaphore
Timer (waitable)
Events

TODO:
Singly linked list (like spl container)
One-time initialization functions
rest of thread support
processes and enumeration

To wrap later?
Object Namespaces
Timer Queue
Interlocked
Critical Sections
job objects
fibers
thread pool

Windows 7 only?
Slim read/write locks

Windows 8 only?
Synchronization Barriers