PR14574 partial fix: Add dyninst support to several tests.

PR14574 partial fix: Add dyninst support to several tests.

* testsuite/lib/stap_run.exp (stap_run): Only append the arguments to the
  test name if there are arguments.
* testsuite/systemtap.base/be_order.exp: Add dyninst support.
* testsuite/systemtap.base/const_value.exp: Ditto.
* testsuite/systemtap.base/control_limits.exp: Ditto.
* testsuite/systemtap.base/cu-decl.exp: Ditto.
* testsuite/systemtap.base/cxxclass.exp: Ditto.
* testsuite/systemtap.base/div0.exp: Ditto.