2014-01-29  Hristian Kirtchev  <kirtchev@adacore.com>

	* einfo.adb (Get_Pragma): Handle the retrieval of pragma Refined_Post.
	* einfo.ads (Get_Pragma): Update the comment on special pragmas
	handled by this routine.
	* sem_prag.adb (Analyze_Pragma): Add a legal pragma Refined_Post
	to the contract of the related subprogram body.
	* sem_util.adb (Add_Contract_Item): Handle the insertion of
	pragma Refined_Post into the contract of a subprogram body.
	* sinfo.ads Update the documentation of node N_Contract.
	* sem_res.adb (Resolve_Entity_Name): Add a guard
	to detect abstract states and variables only when checking the
	SPARK 2014 rules concerning volatile object placement.

2014-01-29  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch4.adb (Find_Equality_Types, Try_One_Interp): within an instance,
	null is compatible with any access type.

From-SVN: r207269