2005-11-14  Emmanuel Briot  <briot@adacore.com>

	* prj-pp.adb (Print): Do not output the with statement if the
	associated name is empty, which happens for virtual extending projects.
	(Print): Preserve the "extends all" attribute when printing the project.

	* prj-tree.ads (String_Value_Of): Add comment about returned value for
	a virtual extending project.

From-SVN: r106996