[reSIProcate] Mutex.cpp and RecursiveMutex.cpp Implementations for Win32

[Ken Kittlitz]

Scott Godin wrote:

> Does anyone have Mutex.cpp and RecursiveMutex.cpp implementations for 
> Win32? If not – I will work on these.
>
Hi Scott,

Mutex.cxx (in resipricate/os ) should work under Win32 -- I fleshed out 
the implementation a month or two ago, along with that of Condition.cxx. 
RecursiveMutex.cxx still needs a Win32 implementation, though.
-Ken