Remove duplicate definition of Window.prototype.postMessage
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76359425
Indicate that the Object function returns an Object even if not called as a constructor.

Fixes #589.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76363026
Remove duplicate definition of Window.prototype.document
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76364757
refactor: Move newQualifiedNameNode and newName methods back to NodeUtil but rename them and make them take an AbstractCompiler instead of a CodingConvention so that calls are still not too verbose.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76367877
Improve logging by making Property toString useful
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76369530
Turn down SymbolTable reporting
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76371063
Improve "@const" handling for invariant expressions (simple numeric/boolean/string operations and "new" expressions)
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76372405
Treat @export as a visibility annotation, equivalent to @public. This allows specifying type and description after an @export tag.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76373288
Merge pull request #627 from headcr4sh/localeCompare

Update externs for String.prototype.localeCompare

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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76387346
Allow an interface to extend two different interfaces if they don't have any conflicting properties.

Fixes #618
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76390463
Add chrome.copresence API to common chrome_extensions externs.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=76435801