contracts.adb (Analyze_Entry_Or_Subprogram_Body_Contract): Remove the guard concerning entry bodies as it is spurious.

2015-11-12  Hristian Kirtchev  <kirtchev@adacore.com>

	* contracts.adb (Analyze_Entry_Or_Subprogram_Body_Contract):
	Remove the guard concerning entry bodies as it is spurious.
	(Analyze_Entry_Or_Subprogram_Contract): Skip the analysis of
	Contract_Cases when not annotating the tree.
	* einfo.adb: Node25 is now used as Contract_Wrapper.
	(Contract_Wrapper): New routine.
	(PPC_Wrapper): Removed.
	(Set_Contract_Wrapper): New routine.
	(Set_PPC_Wrapper): Removed.
	(Write_Field25_Name): Add output for Contract_Wrapper. Remove
	output for PPC_Wrapper.
	* einfo.ads: New attribute Contract_Wrapper along with usage
	in entities. Remove attribute PPC_Wrapper along with usage in nodes.
	(Contract_Wrapper): New routine along with pragma Inline.
	(PPC_Wrapper): Removed along with pragma Inline.
	(Set_Contract_Wrapper): New routine along with pragma Inline.
	(Set_PPC_Wrapper): Removed along with pragma Inline.
	* exp_ch9.adb (Build_Contract_Wrapper): New routine.
	(Build_PPC_Wrapper): Removed.
	(Build_Protected_Entry): Code cleanup.
	(Expand_Entry_Declaration): Create a contract wrapper
	which now verifies Contract_Cases along with pre/postconditions.
	(Expand_N_Task_Type_Declaration): There is no need to check
	whether an entry has pre/postconditions as this is now done
	in Build_Contract_Wrapper.
	* sem_ch13.adb (Analyze_Aspect_Specifications): Pragma
	Refined_Post is now properly inserted in entry bodies.
	(Insert_Pragma): Add circuitry to insert in an entry body. Redo
	the instance "header" circuitry. Remove the now obsolete special
	case of inserting pre- conditions.
	* sem_prag.adb (Analyze_Pragma): Pragma Contract_Cases now
	applies to entries.
	* sem_res.adb (Resolve_Entry_Call): Update the calls to
	PPC_Wrapper.

From-SVN: r230236