Reduce usage of String.intern()
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                 Key: JCR-2464
                 URL: https://issues.apache.org/jira/browse/JCR-2464
             Project: Jackrabbit Content Repository
          Issue Type: Improvement
          Components: jackrabbit-spi-commons
            Reporter: Marcel Reutegger
            Priority: Minor


String.intern() is used for interning the namespace URI in NameImpl. For some 
trivial cases the intern() method shouldn't be called but a constant should be
used. E.g. I'm thinking about the empty namespace URI, where calling 
String.intern() is way more expensive than checking if the length of the URI 
string is zero. 

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