Minor/sync/cleanup j.u.c with Dougs CVS - Oct 2012

[Chris Hegarty]

In preparation to a re-sync of the java.util.concurrent classes with 
Doug's CVS, I've extracted most of the minor/small changes. This will 
reduce the noise when reviewing the remainder of the implementation 
changes. More specifically,

Cleanup:
   javadoc style/consistency
   javadoc example code style
   imports
   whitespace
   uniform serialization method javadoc
   typos

Minor/small impl changes:
   remove redundant null checks
   throw NPE when more efficient
   rework timeouts, lasttime -> deadline
   STPE, make drainTo methods more robust when add throws

To be clear, I'm not requested a review here. These are Doug's changes 
are I am already a reviewer, but please feel free ( be warned, nothing 
interesting here! )

http://cr.openjdk.java.net/~chegar/8001575/webrev.00/webrev/

-Chris.