Add support for transpiling 'import *' statements.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=78215544
Allow CheckNullableReturn check to be run from outside the pass.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=78219496
Filling out the externs for ng.$animate.

* Added the .animate() method
* Added the cancel() method
* Promises are returned from animation methods in 1.3 (-callbacks, +options)
* Added setClass to 1.2
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=78231641
Parameters to functions are optional ('=') in typedefs items are undefined.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=78232575