[Ada] Housekeeping work in gigi (23/n)

[Eric Botcazou]

This removes obsolete stuff and fixes minor nits.

Tested on i586-suse-linux, applied on the mainline.


2010-04-14  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/gigi.h: Reorder declarations and tweak comments.
	(gigi): Adjust ATTRIBUTE_UNUSED markers.
	* gcc-interface/gadaint.h: New file.
	* gcc-interface/trans.c: Include it in lieu of adaint.h.  Reorder.
	(__gnat_to_canonical_file_spec): Remove declaration.
	(number_names): Delete.
	(number_files): Likewise.
	(gigi): Adjust.
	* gcc-interface/Make-lang.in (ada/trans.o): Adjust dependencies to
	above change.


-- 
Eric Botcazou
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