2015-05-22  Hristian Kirtchev  <kirtchev@adacore.com>

	* sem_prag.adb (Analyze_Pragma): Remove the detection
	of a useless Part_Of indicator when the related item is a constant.
	(Check_Matching_Constituent): Do not emit an error on a constant.
	(Check_Missing_Part_Of): Do not check for a missing Part_Of indicator
	when the related item is a constant.
	(Collect_Body_States): Code cleanup.
	(Collect_Visible_States): Code cleanup.
	(Report_Unused_States): Do not emit an error on a constant.
	* sem_util.ads, sem_util.adb (Has_Variable_Input): Removed.

From-SVN: r223535