2016-06-22  Bob Duff  <duff@adacore.com>

	* g-comlin.ads (Parameter_Type): Change subtype of Last to
	Natural.
	* g-comlin.adb (Set_Parameter): Change subtype of Last to
	Natural.
	(Getopt): Check for Arg = "", and Switches /= "".
	(Internal_Initialize_Option_Scan): Check for Argument (Parser,
	Index) /= "".

2016-06-22  Gary Dismukes  <dismukes@adacore.com>

	* sem_prag.adb, sem_ch8.adb: Minor reformatting.

From-SVN: r237693