backends/ocarina-backends-properties.ads
     - Handle Activate_Entrypoint property

 * backends/ocarina-backends-po_hi_c-activity.adb
   - Now handle the Activate_Entrypoint property
     correctly.

 * backends/ocarina-backends-po_hi_c-main.adb
   - Fix Initialize_Entrypoint semantics according
     to the AADL standard.


git-svn-id: https://tecsw.estec.esa.int/svn/taste/trunk/ocarina@2081 129961e7-ef38-4bb5-a8f7-c9a525a55882