Fix testformatserializer.js's number parser so that it handles scientific notation.

Previously it would stop parsing at the 'e' and would consider the 'e' plus the rest of the number to be considered an identifier token.
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=74166024
Add an empty uid property to all goog.defineClass instances before sealing.  This makes defineClass-sealed classes compatible with goog.getUid() where before they would silently fail by generating a different UID every time (in non-strict mode).
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=74244027
Update MOE scrubber directives to fix external compilation error
mentioned here:

https://groups.google.com/forum/#!topic/closure-library-discuss/VIHvGfVitNs
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=74253482