aspects.ads, [...]: Add entries for aspect Obsolescent.

aspects.ads, [...]: Add entries for aspect Obsolescent.

2014-08-04  Robert Dewar  <dewar@adacore.com>

	* aspects.ads, aspects.adb: Add entries for aspect Obsolescent.
	* gnat_rm.texi: Add documentation for aspect Obsolescent.
	* sem_ch13.adb (Analyze_Aspect_Specifications): Implement aspect
	Obsolescent.
	(Check_Aspect_At_Freeze_Point): Add dummy entry for pragma Obsolescent.
	* s-osprim-mingw.adb: Minor reformatting.
	* sem_res.adb (Is_Atomic_Ref_With_Address): New function
	(Resolve_Indexed_Component): Rework warnings for non-atomic access
	(Resolve_Selected_Component): Add warnings for non-atomic access.

From-SVN: r213588