First pass at the big rename from ProtocolBuffers to Google.Protobuf.
We'll see what I've missed when CI fails...
diff --git a/csharp/build_packages.bat b/csharp/build_packages.bat
index 315c150..1502f06 100644
--- a/csharp/build_packages.bat
+++ b/csharp/build_packages.bat
@@ -3,8 +3,8 @@
 @rem Adjust the location of nuget.exe
 set NUGET=C:\nuget\nuget.exe
 
-@rem Build src/ProtocolBuffers.sln solution in Release configuration first.
-%NUGET% pack src\ProtocolBuffers\Google.Protobuf.nuspec -Symbols || goto :error
+@rem Build src/Google.Protobuf.sln solution in Release configuration first.
+%NUGET% pack src\Google.Protobuf\Google.Protobuf.nuspec -Symbols || goto :error
 
 goto :EOF