* Fixed a bunch of Ruby conformance errors.

* Fixed some more Ruby conformance errors in JSON.

About 1.5% of all IEEE754 single-precision numbers require nine
decimal digits to represent accurately.

This better shows the semantic of the API. For already setted fields,
mergeFromString do replacement for singular fields and appending for
repeated fields.

* A few more cases for binary conformance tests.

* over-encoded varints (encoded in more bytes than are necessary).
* truncated varints (>32 bits for 32-bit types).

* Fixed Python decoding bug with 32-bit varints.

* Fixed 1L -> 1LL for 32-bit platforms.

This is basic and more tests will be added over time.

* 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.

A new test is now passing and so we can remove it from the failure
whitelist.