2010-09-10  Robert Dewar  <dewar@adacore.com>

	* gnat_ugn.texi: Add documentation for -gnatw.s/S
	* sem_ch13.adb (Analyze_Attribute_Definition_Clause, case
	Component_Size): Implement warning on overriden size clause.
	(Analyze_Record_Representation_Clause): Implement warning on overriden
	size clause.
	* sem_warn.ads, sem_warn.adb (Warn_On_Overridden_Size): New flag
	(-gnatw.s/S).
	* ug_words: Add entries for -gnatw.s/S.
	* vms_data.ads, usage.adb: Add line for -gnatw.s/-gnatw.S.
	* gcc-interface/Make-lang.in: Update dependencies.

2010-09-10  Vincent Celier  <celier@adacore.com>

	* prj-dect.adb (Parse_Package_Declaration): Allow a package to extend
	a package with the same name from an imported or extended project.
	* prj-proc.adb (Process_Declarative_Items): Process package extensions

2010-09-10  Bob Duff  <duff@adacore.com>

	* exp_ch6.adb (Expand_Call): Do not perform a null_exclusion check on
	'out' parameters.

From-SVN: r164194