Open source unit tests for the conformance checker.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=75556791
Update to guava 18.0
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=75572021
Fix a couple of duplicate definitions in externs
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=75575712
Disallow keywords as object keys in short objlit syntax.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=75585891
Make NewTypeInference give (slightly) more useful information on crash
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=75586282