BUG 7589 Fix Mingw Java libraries name

See:
* http://vtk.org/Bug/view.php?id=10969
* http://vtk.org/Bug/view.php?id=7589

Change-Id: Idad20d624d4d23b7401d22b7c7b7b74506a9ff6f
Merge topic 'JavaMingwLibName' into master

a49ec0bb BUG 7589 Fix Mingw Java libraries name