2012-11-06  Robert Dewar  <dewar@adacore.com>

	* checks.ads, checks.adb, exp_ch4.adb: Minor changes throughout for
	new overflow checking.
	* exp_util.adb (Insert_Actions): Remove special casing of
	Overflow_Check.
	* gnat1drv.adb (Adjust_Global_Switches): Fixes for new handling
	of overflow checks.
	* sem.adb (Analyze): Remove special casing of Overflow_Check
	(Analyze_List): ditto.
	* sem_prag.adb (Analyze_Pragma, case Overflow_Checks): Remove
	SUPPRESSED and change CHECKED to STRICT.
	* sem_res.adb (Analyze_And_Resolve): No longer treat
	Overflow_Check specially.
	(Preanalyze_And_Resolve): ditto.
	(Resolve): ditto.
	* snames.ads-tmpl: Replace Name_Checked by Name_Strict.
	* switch-c.adb (Get_Overflow_Mode): Eliminate 0 setting,
	CHECKED => STRICT.
	* types.ads (Overflow_Check_Type): Remove Suppressed, change
	Checked to Strict (Suppress_Record): Overflow check controlled
	by Suppress array.

From-SVN: r193233