added support for building Symbol packages

src/csharp/Grpc.Auth/Grpc.Auth.nuspec

@@ -22,5 +22,7 @@
   </metadata>
   <files>
     <file src="bin/Release/Grpc.Auth.dll" target="lib/net45" />
+	<file src="bin/Release/Grpc.Auth.pdb" target="lib/net45" />
+	<file src="**\*.cs" target="src" />
   </files>
 </package>

src/csharp/Grpc.Core/Grpc.Core.nuspec

@@ -17,10 +17,12 @@
 	<dependencies>
 	  <dependency id="Microsoft.Bcl.Immutable" version="1.0.34" />
 	  <dependency id="Ix-Async" version="1.2.3" />
-	  <dependency id="grpc.native.csharp_ext" version="0.8.0.0" />
+	  <dependency id="grpc.native.csharp_ext" version="0.9.0.0" />
     </dependencies>
   </metadata>
   <files>
     <file src="bin/Release/Grpc.Core.dll" target="lib/net45" />
+	<file src="bin/Release/Grpc.Core.pdb" target="lib/net45" />
+	<file src="**\*.cs" target="src" />
   </files>
 </package>

src/csharp/build_packages.bat

@@ -11,8 +11,8 @@ endlocal
 @call buildall.bat || goto :error
 
 %NUGET% pack ..\..\vsprojects\nuget_package\grpc.native.csharp_ext.nuspec || goto :error
-%NUGET% pack Grpc.Core\Grpc.Core.nuspec || goto :error
-%NUGET% pack Grpc.Auth\Grpc.Auth.nuspec || goto :error
+%NUGET% pack Grpc.Core\Grpc.Core.nuspec -Symbols || goto :error
+%NUGET% pack Grpc.Auth\Grpc.Auth.nuspec -Symbols || goto :error
 %NUGET% pack Grpc.nuspec || goto :error
 
 goto :EOF

vsprojects/nuget_package/grpc.native.csharp_ext.nuspec

@@ -2,14 +2,14 @@
 <package>
   <metadata>
     <id>grpc.native.csharp_ext</id>
-    <version>0.8.0.0</version>
+    <version>0.9.0.0</version>
     <authors>Google Inc.</authors>
     <owners>Jan Tattermusch</owners>
     <licenseUrl>https://github.com/grpc/grpc/blob/master/LICENSE</licenseUrl>
     <projectUrl>http://github.com/grpc/grpc</projectUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>Native extension needed by gRPC C# library. This is not the package you are looking for, it is only meant to be used as a dependency.</description>
-    <releaseNotes>Release of gRPC C core 0.8.0 libraries.</releaseNotes>
+    <releaseNotes>Release of gRPC C core 0.9.0 libraries.</releaseNotes>
     <copyright>Copyright 2015</copyright>
     <title>gRPC C# Native Extension</title>
     <summary>Native library required by gRPC C#</summary>