Fixing typos/formatting/null checking in v2.app.speculate package
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Key: MAPREDUCE-2643
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2643
Project: Hadoop Map/Reduce
Issue Type: Sub-task
Components: mrv2
Reporter: Josh Wills
Assignee: Josh Wills
Priority: Minor
No functional changes in this patch: just fixing some typos in the comments,
fixing some formatting issues, renaming classes for consistency, and making the
null checking around Jobs/Tasks more consistent.
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