Get the GUI to compile in windows and add some plugin framework

Builds/Linux/Makefile

Builds/MacOSX/open-ephys.xcodeproj/project.pbxproj

Builds/VisualStudio2012/open-ephys.vcxproj

Builds/VisualStudio2012/open-ephys.vcxproj.filters

Builds/VisualStudio2013/open-ephys.sln

Builds/VisualStudio2013/open-ephys.vcxproj

Builds/VisualStudio2013/open-ephys.vcxproj.filters

Source/AccessClass.cpp

Source/AccessClass.h

Source/Processors/Editors/GenericEditor.cpp

Source/Processors/Editors/GenericEditor.h

Source/Processors/GenericProcessor/GenericProcessor.h

Source/Processors/NetworkEvents/NetworkEvents.cpp

Source/Processors/NetworkEvents/NetworkEventsEditor.cpp

Source/Processors/NetworkEvents/NetworkEventsEditor.h

Source/Processors/PluginManager/OpenEphysPlugin.h

Source/Processors/PluginManager/PluginManager.cpp

Source/Processors/PluginManager/PluginManager.h

Source/Processors/ProcessorGraph/ProcessorGraph.cpp

Source/Processors/ProcessorGraph/ProcessorGraph.h