2014-07-30  Bob Duff  <duff@adacore.com>

	* exp_ch9.ads, sem_prag.adb, exp_ch4.adb, sem_ch13.adb: Minor comment
	fixes.
	* treepr.ads, treepr.adb (ppp): Make this debugging routine
	accept any type covered by Union_Id.

From-SVN: r213248