Update master to the production release

Summary:
Updated master branch to the production release

Test Plan:

Reviewers:

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Task ID: #

Blame Rev:
Fix build 'ant clean bin-package' now works and the single node corona setup works.
Updated to latest.
Update the README.
Updated the Corona README.txt with the wiki instructions.
Update master to latest trunk
Updated the Corona README.txt with the wiki instructions
Sync github to internal FB hadoop code.