hdfview

Merge pull request #123 in HDFVIEW/hdfview from master to hdfview-3

* commit '228a0c7540761a98e63afd54e9c214cd049ccf89':
  Javadoc fixes
  Update copyright
  Updates for RELEASE.txt
  Fix DataValidatorFactory for VLEN-string types
  Correctly create vlen-string datasets and datatypes
  Update release text