Added addition parameter file

Added a "full-scale" parameter file. 100x100 neurons, 60,000sec. To
avoid spending 3 months on a simulation, you might want to change
"numSims" to "1" or "2". Just saying.
Fix undefined behavior in setting neuron params.

Calling the RNG inside the call to Neuron#setParams exploits undefined
behavior in C++. These calls may be ordered as the compiler sees fit.
Change makes setParams more deterministic.
Adding VS2012 Project Files

The ".vxproj" is for Visual Studio 2012. I've only tested building
Debug, OMP Debug (OpenMP) versions.
Updates to VS2012 Project and IOCP

IOCP_Sim.cpp is excluded from builds (which then excludes
SingleThreadedSim). Might want to "tidy up" this method of
implementation since having two classes the same name isn't really
kosher.
These are the changes I've made to 'master' in order to
get a successful Windows compilation (using Visual
Studio 2012). Please feel free to let me know if I've broken
anything, and I'll try to fix the issue. Alternatively, just
back out my changes).
Fix bgtypes.h
Changes for compiling on linux
Renamed two variables to allow compilation
Added test-medium-2.xml to master branch
Fixed grid dimensions in 'test-medium-2.xml'
fixed layout in test-medium-2.xml
changed output file name for test-medium-2 and added compiler optimizations to Makefile
Added Paul's test-medium.xml file to branch
Changed optimization level for gcc compilation