New Shared Memory

[trevius]

I imagine KLS will chime in on this thread, but here is the changelog update about it:

== 02/27/2013 ==
KLS: Changed how shared memory works:
    Instead of System V/windows pagefile shared memory we now have shared memory that's backed by the filesystem.
    What that means is basically instead of EMuSharedMem(shared library) we now have shared_memory(executable), 
    shared memory will be persistent between runs until you delete or reload it using the shared_memory executable.
    
    STEPS FOR PEOPLE WHO CAN'T BE BOTHERED TO FIGURE IT OUT:
        1) Create a directory in the place you run world/zone named shared and make sure files can write there.
        2) Run the shared_memory executable from the same place you run world/zone 
        (it's basically doing the loading we would do on startup so will take a moment).
        3) Run world/zone/whatever