[multiple changes]

2009-04-09  Robert Dewar  <dewar@adacore.com>

	* exp_ch4.adb (Expand_Concatenate): Improve handling of overflow cases

2009-04-09  Pascal Obry  <obry@adacore.com>

	* a-cihama.adb, a-cihama.ads, a-coinve.adb, a-coinve.ads,
	s-tpoben.adb, s-tpoben.ads, s-finimp.adb, s-finimp.ads,
	a-convec.adb, a-convec.ads, a-finali.adb, a-finali.ads,
	a-filico.ads: Add some missing overriding keywords.

From-SVN: r145807