2007-10-15 Robert Dewar <dewar@adacore.com>

	* s-taprop-solaris.adb, s-taprop-vms.adb, s-taprop-mingw.adb, 
	s-taprop-vxworks.adb, s-taprop-posix.adb, a-calend-vms.adb,
	a-calend.adb, a-nuflra.adb, a-tigeau.adb, a-wtgeau.adb, 
	checks.adb, bindgen.adb, eval_fat.adb, exp_fixd.adb, fmap.adb, 
	freeze.adb, g-awk.adb, g-calend.adb, g-diopit.adb, g-expect.adb, 
	gnatchop.adb, gnatlink.adb, g-spipat.adb, g-thread.adb, make.adb, 
	mdll.adb, mlib.adb, mlib-prj.adb, osint.adb, par-ch3.adb, prj.adb, 
	prj-makr.adb, sem_prag.adb, sem_type.adb, s-fatgen.adb, s-fileio.adb, 
	sinfo.ads, sinput-d.adb, s-taasde.adb, s-tasdeb.ads, s-tasren.adb, 
	s-tassta.adb, s-tpobop.adb, s-tposen.adb, stylesw.adb, types.ads,
	uintp.adb, validsw.adb, makegpr.adb, a-rbtgso.adb, a-crbtgo.adb, 
	a-coorse.adb, a-convec.adb, a-coinve.adb, a-cohama.adb, a-ciorse.adb, 
	a-cihama.adb, a-cidlli.adb, a-chtgop.adb, a-cdlili.adb, a-cdlili.adb, 
	a-coormu.adb, a-ciormu.adb, a-cihase.adb, a-cohase.adb, a-ciorma.adb, 
	a-coorma.adb, a-ztgeau.adb, symbols-vms.adb, a-crdlli.adb, 
	a-calari.adb, a-calfor.adb, s-os_lib.adb, s-regpat.adb, a-ngrear.adb:
	Minor reformatting.
	Add Unreferenced and Warnings (Off) pragmas for cases of
	variables modified calls where they are IN OUT or OUT parameters and
	the resulting values are not subsequently referenced. In a few cases,
	we also remove redundant code found by the new warnings.

	* ug_words, vms_data.ads, usage.adb, sem_util.adb, sem_util.ads, 
	sem_warn.adb, sem_warn.ads, sem_res.adb, sem_ch7.adb, sem_ch8.adb,
	sem_ch5.adb, opt.ads, lib-xref.adb, lib-xref.ads, exp_smem.adb,
	sem_ch11.adb, exp_ch6.adb, einfo.ads, einfo.adb: implement a new
	warning controlled by -gnatw.o that warns on cases of out parameter
	values being ignored.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@129318 138bc75d-0d04-0410-961f-82ee72b054a4

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