sem_prag.adb (Analyze_Pragma, [...]): Don't allow REASON parameter in compiler units (bootstrap issues).

2013-09-10  Robert Dewar  <dewar@adacore.com>

	* sem_prag.adb (Analyze_Pragma, case Warnings): Don't allow
	REASON parameter in compiler units (bootstrap issues).

2013-09-10  Robert Dewar  <dewar@adacore.com>

	* gnat1drv.adb (Adjust_Global_Switches): Output warning if
	-gnateE specified for a target that does not support it.

From-SVN: r202463