2016-04-19  Arnaud Charlet  <charlet@adacore.com>

	* sem_prag.adb, sem_attr.adb, par-prag.adb, exp_aggr.adb, sem_type.adb
	sem_ch12.adb, sem_ch3.adb, exp_ch7.adb, exp_ch9.adb: Code cleanup.
	* sem_res.adb, sem_util.ads, sem_util.adb (Is_OK_Volatile_Context):
	Promoted from being a nested subprogram in Sem_Res.Resolve_Entity_Name
	to publicly visible routine in Sem_Util.

2016-04-19  Ed Schonberg  <schonberg@adacore.com>

	* checks.adb (Apply_Parameter_Aliasing_Checks): Do not apply
	the check if the type of the actual is By_Reference.

From-SVN: r235199