* sem_prag.adb (Get_SPARK_Mode_Id): Handle the
case where the pragma may appear without an argument.
(Analyze_Global_List): Add expanded_name to the list of constructs
that denote a single item.
(Collect_Global_List): Add expanded_name to the list of constructs
that denote a single item.
* exp_ch4.adb (Apply_Accessibility_Check): Add local constant
Pool_Id and local variables Fin_Call and Free_Stmt. Finalize
and deallocate a heap-allocated class-wide object after it
has been determined that it violates the accessibility rules.
* rtsfind.ads: Add new RTU_Id for System.Memory. Add new RE_Id
and entry in RE_Unit_Table for RE_Free.