* checks.adb:
	(In_Subrange_Of): New calling sequence
	(Determine_Range): Prepare for new processing using base type

	* exp_ch4.adb:
	(Compile_Time_Compare): Use new calling sequence

	* exp_ch5.adb:
	(Compile_Time_Compare): Use new calling sequence

	* sem_eval.adb:
	(Compile_Time_Compare): New calling sequence allows dealing with
	invalid values.
	(In_Subrange_Of): Ditto

	* sem_eval.ads:
	(Compile_Time_Compare): New calling sequence allows dealing with
	invalid values.
	(In_Subrange_Of): Ditto

From-SVN: r139467