2009-11-30 Vincent Celier <celier@adacore.com>

2009-11-30  Vincent Celier  <celier@adacore.com>

	* prj-tree.ads: Minor comment updates
	* prj-tree.adb: Minor reformatting

2009-11-30  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch3.adb (Derive_Subprogram): Indicate that an inherited
	predefined control operation is hidden if the parent type is not
	visibly controlled.
	* sem_ch6.adb (Check_Overriding_Indicator): Do not report error if
	overridden operation is not visible, as may be the case with predefined
	control operations.
	* sem_disp.adb (Check_Dispatching_Operation): Do not emit warning on
	non-overriding control operation when type is not visibly controlled,
	if the subprogram has an explicit overriding indicator.
	* sem_util.ads, sem_util.adb (Is_Visibly_Controlled): Moved here from
	sem_disp.adb.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@154791 138bc75d-0d04-0410-961f-82ee72b054a4