PCH refactor: remove non-system headers from stdafx.h
Split some of Debugger_parser.h into Util_Text.h (now Util_MemoryTextFile.cpp isn't dependent on any Debugger headers
Move Util_* files into Debugger subfolder & update all vcproj files
Added new DiskConsts.h so Structs.h doesn't need to include DiskImage.h
Renamed DiskConsts.h to DiskDefs.h + other header refactoring
More header refactoring
Created new DebugDefs.h for memory defs
Qualified all STL refs with std:: to get rid of the 'using namespace std' mismatch between the main code & debugger code
Remove wchar.h & Update VS2012 proj with new headers
Merge pull request #220 from AppleWin/pch_refactor

PCH / stdafx refactor