2007-08-16  Vincent Celier  <celier@adacore.com>

	* prj.ads (Project_Data): Add comments.

	* prj-attr.adb: New attribute Removed_Source_Dirs

	* prj-nmsc.adb (Get_Directories): Take into account new attribute
	Removed_Source_Dirs

	* snames.ads, snames.adb: New standard name Removed_Source_Dirs

From-SVN: r127544