exp_util.adb (Make_CW_Equivalent_Type): Do not mark the type as frozen for targets that do not require front-end layout.

	* exp_util.adb (Make_CW_Equivalent_Type): Do not mark the type as
	frozen for targets that do not require front-end layout.
	(New_Class_Wide_Subtype): Always reset the freezing status to False.
	* exp_ch8.adb: Do not 'with' Targparm.
	(Expand_N_Object_Renaming_Declaration): Always freeze a class-wide
	subtype that has been built from the expression.
	* exp_intr.adb (Expand_Unc_Deallocation): If the designated type is
	class wide, freeze the implicit type that has been built from the
	expression at the dereference point.
	* freeze.adb (Freeze_Entity): Adjust comment.
	* gcc-interface/decl.c (Gigi_Equivalent_Type) <E_Class_Wide_Type>:
	Remove useless test.
	* gcc-interface/trans.c (process_freeze_entity): Do not special-case
	class-wide subtypes.

	* s-osinte-aix.adb (clock_gettime): Fix comment.
	* s-osinte-darwin.adb (clock_gettime): Likewise.

From-SVN: r154514