[patch] Enhance debug info for fixed-point types

[Eric Botcazou]

> 2020-11-11  Eric Botcazou  <ebotcazou@adacore.com>
> 
> 	* exp_dbug.adb (Is_Handled_Scale_Factor): Delete.
> 	(Get_Encoded_Name): Do not call it.
> 	* gcc-interface/decl.c (gnat_to_gnu_entity) <Fixed_Point_Type>:
> 	Tidy up and always use a meaningful description for arbitrary
> 	scale factors.
> 	* gcc-interface/misc.c (gnat_get_fixed_point_type_info): Remove
> 	obsolete block and adjust the description of the scale factor.

There was an oversight in the patch, fixed thus.

	* gcc-interface/decl.c (gnat_to_gnu_entity) <Fixed_Point_Type>: Put
	back the "else" unduly removed.

-- 
Eric Botcazou
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