Minor Improvements (IMO)

Hej, Richard.  Jätte bra med rika!  Jag är committer på Tika men har inte varit aktiv förr en stund. Jag tänkte det skulle varit god att scripta (?) Tika med JRuby men jag aldrig gjorde den. Tack så mycket!

Please check out my commits, to see if you think they would be helpful.

One thing we've been discussing on the JRuby Users mailing list lately is minimizing the crossing of the Java <-> Ruby bridge.  That's why I changed some of the functionality to access the Ruby hash instead of the Java hash. Once the Ruby metadata hash is created, it's faster for JRuby to access that than the Java Metadata object.

Hej då!

- Keith