module Google

We define these before requiring the platform-specific modules. That way the module init can grab references to these.

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This class makes RepeatedField act (almost-) like a Ruby Array. It has convenience methods that extend the core C or Java based methods.

This is a best-effort to mirror Array behavior. Two comments:

1) patches always welcome :)
2) if performance is an issue, feel free to rewrite the method
   in jruby and C.  The source code has plenty of examples

KNOWN ISSUES

- #[]= doesn't allow less used approaches such as `arr[1, 2] = 'fizz'`
- #concat should return the orig array
- #push should accept multiple arguments and push them all at the same time