Now Visual Studio 2010 Compatible

Removed a "using namepsace std;" to stop an ambiguous symbol error
regarding the "hash" datatype when compiling with Visual Studio 2010. As
a result, I had to add a "std::" to an ostringstream.

Duplicated, upgraded, and reworked the existing Visual Studio 2008
project so that it now compiles successfully with Visual Studio 2010.
Both debug and release work without a hitch on Windows 7. The original
Visual Studio 2008 solution is still there if it is needed.

VS2010/.gitignore

@@ -0,0 +1,33 @@
+.*
+*.o
+*.o.*
+*.so
+*.so.dbg
+*.bin
+*.gz
+*.obj
+*.user
+*.manifest
+*.suo
+*.ncb
+*.pdb
+*.ilk
+*.exp
+*.tmp
+*.aps
+*.opensdf
+temp/*
+build/*
+bin/*
+ipch/*
+Debug/*
+Release/*
+New Folder/*
+*.sdf
+VS2010/*.vcxproj.user
+VS2010/*.vcxproj.filters
+
+*.patch
+*.diff
+
+!.gitignore