8062525: JInternalFrame can't show correctly with the specical option "-esa -ea -Xcheck:jni -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel". Reviewed-by: serb

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/