And make the fields of com.sun.star.uno.Type private

Change-Id: Ied7698b4157460e9726f271092c92b6b382239fd
Reviewed-on: https://gerrit.libreoffice.org/25971Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>