Merge pull request #1253

Some visual Studio 6 specific file types. See documentation at:
http://msdn.microsoft.com/en-us/library/aa260829(v=vs.60).aspx
http://msdn.microsoft.com/en-us/library/aa239568(v=vs.60).aspx

Closes #1253 with amendments

VisualStudio.gitignore

@@ -184,4 +184,10 @@ UpgradeLog*.htm
 FakesAssemblies/
 
 # Node.js Tools for Visual Studio
-.ntvs_analysis.dat
+.ntvs_analysis.dat
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt