[Ada] Fix type mismatch warnings during LTO bootstrap #3

[Ada] Fix type mismatch warnings during LTO bootstrap #3

gcc/ada/

	* atree.h (Slots_Ptr): Change pointed-to type to any_slot.
	* fe.h (Get_RT_Exception_Name): Change type of parameter.
	* namet.ads (Name_Entry): Mark non-boolean components as aliased,
	reorder the boolean components and add an explicit Spare component.
	* namet.adb (Name_Enter): Adjust aggregate accordingly.
	(Name_Find): Likewise.
	(Reinitialize): Likewise.
	* namet.h (struct Name_Entry): Adjust accordingly.
	(Names_Ptr): Use correct type.
	(Name_Chars_Ptr): Likewise.
	(Get_Name_String): Fix declaration and adjust to above changes.
	* types.ads (RT_Exception_Code): Add pragma Convention C.
	* types.h (Column_Number_Type): Fix original type.
	(slot): Rename union type to...
	(any_slot): ...this and adjust assertion accordingly.
	(RT_Exception_Code): New enumeration type.
	* uintp.ads (Uint_Entry): Mark components as aliased.
	* uintp.h (Uints_Ptr):  Use correct type.
	(Udigits_Ptr): Likewise.
	* gcc-interface/gigi.h (gigi): Adjust name and type of parameter.
	* gcc-interface/cuintp.c (UI_To_gnu): Adjust references to Uints_Ptr
	and Udigits_Ptr.
	* gcc-interface/trans.c (Slots_Ptr): Adjust pointed-to type.
	(gigi): Adjust type of parameter.
	(build_raise_check): Add cast in call to Get_RT_Exception_Name.