Modernize o.e.dltk.ruby.formatter.tests. * Bump BREE to 1.6. * Generify. * Add missing @Override. * Remove useless Eclipse-LazyStart. * Stricter compiler warnings. * Enable save actions. * Add missing copyright headers. Change-Id: If2da46e10ca1532e65e7caae4fbe8b41f8ad0730 Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>