Update Mozilla PSL.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=50980142
Shuffling from internal-only change.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51059733
In the FinalizableReferenceQueue code, remove the unnecessary nested exception
class Finalizer.ShutDown, which could cause problems if the URL for the
classfile of Finalizer was not related in the obvious way to the URL for the
classfile of Finalizer.ShutDown. This is Guava issue 1505
<https://code.google.com/p/guava-libraries/issues/detail?id=1505> reported by
Jesse Glick <jglick@cloudbees.com>, and the fix is based on the patch he linked
to there.

Also add a test to ensure that Finalizer doesn't acquire other nested classes
in the future.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51090847
Fix TreeTraverser's class javadoc to the correct result for a breadth-first traversal.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51145407
Shuffling from internal-only change.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51147719
Add DoubleMath.mean. (Includes a few drive-by lint fixes on DoubleMathTest.)
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51173415
This CL fixes usage of equality operators for subclasses of java.lang.Number. Comparing numeric objects using "==" tests for reference equality, when most likely value equality is intended. This an automated fix using error-prone.

We intend to make this a compilation error in Google's Java compiler, so it is necessary to fix existing occurrences first to avoid breaking builds.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51251971
Fix documentation for c.g.common.collect.Maps.transform{Values,Entries}.

It used to refer to methods that no longer exist.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51253115
Make the supersource for GWT version of com.google.common.collect Java 7 compatible.

The non GWT version of the collection classes were made Java 7 compatible in CL 13495337.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51266213
Make WrappingScheduledExecutorService's constructor protected, rather than package-private. (This is consistent with WrappingExecutorService.)
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51273229
Mark the new Service methods as final in AbstractService,
AbstractExecutionThreadService, AbstractIdleService and
AbstractScheduledService.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=51305735