2009-07-23  Arnaud Charlet  <charlet@adacore.com>

	* a-convec.adb: Add comments about suspicious/subtle code.

2009-07-23  Ed Schonberg  <schonberg@adacore.com>

	* einfo.ads: Document use of Alias in private overriding

2009-07-23  Thomas Quinot  <quinot@adacore.com>

	* sem_ch13.adb (Analyze_Attribute_Definition_Clause): For the case of
	an array type, propagate alignment from first subtype to implicit base
	type so that other subtypes (such as the itypes for aggregates of the
	type) also receive the expected alignment.

	* g-comlin.ads: Minor documentation clarification/rewording. 
	* scos.ads: Minor comments update.
	* lib-writ.ads: Minor reformatting

From-SVN: r149991