[Ada] doc updates

[Arnaud Charlet <charlet at adacore dot com>]

Tested on i686-linux. Committed on mainline.

Documentation updates.

2005-03-08  Geert Bosch  <bosch@adacore.com>
	    Arnaud Charlet  <charlet@adacore.com>
	    Robert Dewar  <dewar@adacore.com>
	    Cyrille Comar  <comar@adacore.com>
	    Sergey Rybin  <rybin@adacore.com>

	* gnat_ugn.texi: Remove extended inline assembly example, as it was far
	too specific and long-winded to be appropriate for the GNAT User's
	Guide.
	Warn about use of GCC switches not documented in the GNAT User's Guide,
	as these may cause generated code to not conform to Ada semantics.
	Remove mention of -gdwarf-2 for sparc64, since this is now the default.
	Add documentation for -gnat95 and -gnat05 switches
	Remove paragraph documenting obsolete way to refer to third party
	libraries.
	Add a few references to Ada_05 that were missing.
	Update documentation on -gnatZ/-gnatL.
	Document limitation when using -m64 under Solaris.
	Change the "Name Casing" subsection of the pretty-printer section
	according to the changes in the dictionary processing.

	* gnat_rm.texi: Document the Ada_05 pragma.
	Section on record representation clauses describes the new more
	relaxed rules about placement of large packed bit array components.
	Add documentation of GNAT.UTF_32

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