[maven-release-plugin]  copy for tag swingx-project-1.6.5-1

git-svn-id: https://svn.java.net/svn/swingx~svn/tags/swingx-project-1.6.5-1/swingx-core@4285 1312f61e-266d-0410-97fa-c3b71232c9ac
Protected appropriate RowSorter setter for JXTreeTable, .gitignore, modified pom
Merge remote-tracking branch 'origin/master'