2008-03-26  Robert Dewar  <dewar@adacore.com>

	* gnat_ugn.texi: Add documentation for -gnatw.w/-gnatw.W
	Add description for the new gnatstub option '--header-file'
	clarification of -gnatwz/-gnatwZ
	Add a "Irix-Specific Considerations" section to document the need to
	set LD_LIBRARY_PATH when using the default shared runtime library.
	Added documentation for both gcov and gprof.

	* gnat_rm.texi: Document that pragma Compile_Time_Warning generates
	messages that are not suppressed when clients are compiled.
	Add documentation of s-pooglo s-pooloc
	Document the new GNAT.Serial_Communications API.
	Add documentation for 'Old attribute
	Add description of pragma Optimize_Alignment

	* ug_words: Add entries for -gnatw.w -gnatw.W

	* usage.adb: Add line for -gnatw.w (warn on warnings off)

From-SVN: r133588