Ruby: generated foo.proto -> foo_pb.rb instead of foo.rb.
This brings us more into line with other langauges, and makes it more
obvious when we are requiring protobuf generated code.
Add a script to build protoc zip packages.
[ci skip]
Change-Id: Ia0e0bf3bb6bd24633dc8f294318bb20ac837f8b9
Ruby: translate package names from snake_case -> PascalCase.
Added unit test for PascalCasing package names in Ruby.
Added new file to ruby_EXTRA_DIST.
A series of improvements:
- Improved Protobuf module compatibility (disabled by default);
- Hide advanced settings;
- Added build tree configuration;
- Added build of examples.