checks.adb: Remove Assume_Valid parameter from In_Subrange_Of calls

checks.adb: Remove Assume_Valid parameter from In_Subrange_Of calls

2009-04-07  Robert Dewar  <dewar@adacore.com>

	* checks.adb:
	Remove Assume_Valid parameter from In_Subrange_Of calls

	* sem_eval.adb:
	(Is_Subrange_Of): Remove Assume_Valid parameter, not needed
	(Is_In_Range): Remove incorrect use of Assume_Valid
	(Is_Out_Of_Range): Remove incorrect use of Assume_Valid

	* sem_eval.ads:
	(Is_Subrange_Of): Remove Assume_Valid parameter, not needed
	(Is_In_Range): Documentation cleanup
	(Is_Out_Of_Range): Documentation cleanup

	* gnat_rm.texi:
	Add documentation for Assume_No_Invalid_Values pragma

	* sem_ch12.adb: Minor reformatting

	* sem_ch6.adb: (Check_Conformance): Avoid cascaded errors

	* sem_prag.adb: Improve error message.

	* gnatchop.adb, osint.ads, sinput.adb, sinput.ads, styleg.adb:
	LF/CR no longer recognized as line terminator

	* switch.ads: Minor documentation improvement

	* vms_data.ads: Minor reformatting

From-SVN: r145675