* s-tpoben.ads, s-tpoben.adb, s-taprob.ads, s-taprob.adb
(Get_Ceiling): New subprogram that returns
the ceiling priority of the protected object.
(Set_Ceiling): New subprogram that sets the new ceiling priority of
the protected object.
* s-tarest.adb: (Create_Restricted_Task): Fix potential CE.
* s-taskin.ads, s-taskin.adb: (Storage_Size): New function.
From-SVN: r118317
