exp_ch6.adb (Process_Contract_Cases_For): Update the call to Expand_Pragma_Contract_C...

exp_ch6.adb (Process_Contract_Cases_For): Update the call to Expand_Pragma_Contract_Cases.

2015-05-26  Hristian Kirtchev  <kirtchev@adacore.com>

	* exp_ch6.adb (Process_Contract_Cases_For): Update the call to
	Expand_Pragma_Contract_Cases.
	* exp_prag.ads, exp_prag.adb (Expand_Contract_Cases): Rename to
	Expand_Pragma_Contract_Cases.
	* sem_ch13.adb (Add_Invariants): Use the original aspect name
	when creating the arguments of pragma Check. This ensures that
	'Class is properly recognized and handled.

From-SVN: r223671