[Ada] Fix type mismatch warnings during LTO bootstrap #4

[Ada] Fix type mismatch warnings during LTO bootstrap #4

gcc/ada/

	* libgnat/s-stalib.ads (Exception_Data): Mark components as aliased.
	* stand.ads (Standard_Entity_Type): Enhance comments.
	* cstand.adb (Make_Component): Rename into...
	(Make_Aliased_Component): ...this; set Is_Aliased and Is_Independent
	flags on the component.
	(Create_Standard): Adjust the types of the component of the record
	Standard_Exception_Type and mark them as aliased.
	* exp_ch11.adb (Expand_N_Exception_Declaration): Use OK
	conversion to Standard_Address for Full_Name component, except
	in CodePeer_Mode (set it to 0).
	* exp_prag.adb (Expand_Pragma_Import_Or_Interface): Likewise.
	* raise.h (struct Exception_Data): Change the type of Full_Name,
	HTable_Ptr and Foreign_Data.