Stephen Furlani's C# updates, although this may get retired anyway

git-svn-id: http://zxing.googlecode.com/svn/trunk@2712 59b500cc-1b3d-0410-9834-0bbf25fbcc57
Going to be so bold as to remove this, following posts on the mailing list, as it already also homed at https://projects.developer.nokia.com/QZXing/browser and may not be as maintained or relevant going forward

git-svn-id: http://zxing.googlecode.com/svn/trunk@2713 59b500cc-1b3d-0410-9834-0bbf25fbcc57