Remove AsyncSettableFuture.isSet
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=79569901
Use features from GWT 2.6.0:
- Use Class.getSimpleName() instead of our custom implementations.
- Mark test that uses StringBuilder.appendCodePoint() as working under GWT.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=79579791
Remove references to on-demand computation of values.

Guava issue #1885
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=79582498
Add CONTRIBUTING.md file to tell users how they can contribute and what to expect.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=79583464