2011-08-04 Emmanuel Briot <briot@adacore.com>

2011-08-04  Emmanuel Briot  <briot@adacore.com>

	* prj.adb, prj.ads, makeutl.adb, makeutl.ads, prj-env.adb
	(Project_Tree_Appdata): New type.
	It is now possible to associate application-specific data to a project
	tree. In particular, this is used in the gprbuild builder to avoid a
	number of global tables and htables, especially now that there can be
	several project trees loaded at once because of aggregate projects.
	(Debug_Name): new procedure.
	* projects.texi: Clarify syntax of "**" for Source_Dirs

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@177315 138bc75d-0d04-0410-961f-82ee72b054a4