2008-05-20  Robert Dewar  <dewar@adacore.com>

	* g-byorma.adb, gnatlink.adb, prepcomp.adb, sinfo.ads,
	sem_ch12.adb: Update comments. Minor reformatting.

	* exp_ch2.adb: Typo

	* s-unstyp.ads: Fixed some typos in comments.

From-SVN: r135651