#340 junit Activator cannot use services on MiniFramework

The junit Activator must avoid using OSGi services when it is being run
on the MiniFramework. A test is added to only use services if the launch
property "launch.services" is true. This is set to false by the launcher
only when the MiniFramework is used (-runframework=none).

Signed-off-by: BJ Hargrave <bj@bjhargrave.com>
Merge fix for #340 from branch 'master' into next