* exp_ch3.adb, exp_prag.adb, exp_util.adb, exp_util.ads, freeze.adb,
sem_ch13.adb, sem_elab.adb (Exp_Prag.Expand_Pragma_Import_Or_Interface):
Factor out code to new subprogram...
(Exp_Util.Find_Init_Call): New shared routine to find the init proc call
for a default initialized variable.
(Freeze.Check_Address_Clause): Do not reset Has_Delayed_Freeze on an
entity that has an associated freeze node.
(Sem_Ch13.Analyze_Attribute_Definition_Clause, case Address):
If there is an init call for the object, defer it to the object freeze
point.
(Check_Elab_Call.Find_Init_Call): Rename to Check_Init_Call, to avoid
name clash with new subprogram introduced in Exp_Util.