Potpourri 2
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                 Key: MAHOUT-166
                 URL: https://issues.apache.org/jira/browse/MAHOUT-166
             Project: Mahout
          Issue Type: Improvement
    Affects Versions: 0.2
            Reporter: Sean Owen
            Assignee: Sean Owen
            Priority: Minor
             Fix For: 0.2
         Attachments: MAHOUT-166.patch

Another large changelist constructed from FindBugs and IntelliJ analysis. It's 
big enough I figured I'd run it by the list. Key changes:

- Making stuff final, private that can be
- Dead code elimination
- Simplifying JUnit assertions -- "assertTrue(a.equals(b) == true)" could be 
"assertEquals(a, b)" for instance. Also fixed some expected/actual value issues
- Not compiling a Pattern object millions of times -- String.split() and 
replace()/replaceAll() do this and can be profitably replaced with a 
precompiled Pattern.
- Small bug fixes picked up by analysis

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