2012-03-15  Yannick Moy  <moy@adacore.com>

	* aspects.adb, aspects.ads (Aspect_Id): New GNAT aspect
	Aspect_Contract_Case.
	* gnat_rm.texi Document the new pragma/aspect
	Contract_Case. Correct the documentation of the existing
	pragma/aspect Test_Case with the new semantics.
	* sem_attr.adb (Analyze_Attribute): Allow use of 'Result in the
	Ensures component of a Contract_Case pragma.
	* sem_ch13.adb (Analyze_Aspect_Specifications): Check new aspect
	and translate it into a pragma.
	(Check_Aspect_At_Freeze_Point): Take into account the new aspect.
	* sem_ch3.adb, sinfo.adb, sinfo.ads Renaming of TC (for test case)
	into CTC (for contract and test case).
	* sem_ch6.adb (Process_PPCs): Generate Check pragmas from
	Contract_Case pragmas, similarly to what is done already for
	postconditions.
	* sem_prag.adb, sem_prag.ads (Check_Contract_Or_Test_Case):
	Renaming of Check_Test_Case.
	(Analyze_Pragma, Sig_Flags): Take into account the new pragma.
	* sem_util.adb, sem_util.ads Renaming to take into account the
	new pragma, so that functions which applied only to Test_Case
	now apply to both Test_Case and Contract_Case.
	* par-prag.adb, sem_warn.adb, snames.ads-tmpl Take into account
	the new pragma.

From-SVN: r185415