Factored Conformance and Benchmark test messages into shared test schema. (#1971)

* Factored Conformance test messages into shared test schema.

* Updated benchmarks to use new proto3 message locations.

* Fixed include path.

* Conformance: fixed include of Python test messages.

* Make maven in Rakefile use --batch-mode.

* Revert changes to benchmarks.

On second thought I think a separate schema for
CPU benchmarking makes sense.

* Try regenerating C# protos for new test protos.

* Removed benchmark messages from test proto.

* Added Jon Skeet's fixes for C#.

* Removed duplicate/old test messages C# file.

* C# fixes for test schema move.

* Fixed C# to use the correct TestAllTypes message.

* Fixes for Objective C test schema move.

* Added missing EXTRA_DIST file.
diff --git a/ruby/Rakefile b/ruby/Rakefile
index ba1cf4c..40d0a31 100644
--- a/ruby/Rakefile
+++ b/ruby/Rakefile
@@ -44,11 +44,11 @@
     raise ArgumentError, "maven needs to be installed"
   end
   task :clean do
-    system("mvn clean")
+    system("mvn --batch-mode clean")
   end
 
   task :compile do
-    system("mvn package")
+    system("mvn --batch-mode package")
   end
 else
   Rake::ExtensionTask.new("protobuf_c", spec) do |ext|