2012-02-17  Robert Dewar  <dewar@adacore.com>

	* sem_dim.adb, sem_dim.ads, s-tasren.adb, prj.adb, prj.ads, freeze.adb,
	sem_res.adb, exp_ch4.adb, sinput.adb, sinput.ads, exp_aggr.adb,
	exp_intr.adb, s-os_lib.adb: Minor reformatting.

2012-02-17  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Is_Non_Overriding_Operation): Add warning if the
	old operation is abstract, the relevant type is not abstract,
	and the new subprogram fails to override.

From-SVN: r184336