2010-10-05  Vincent Celier  <celier@adacore.com>

	* make.adb (Scan_Make_Arg): Take into account new switch
	--source-info=file.
	* makeusg.adb: Add line for new switch --source-info=file.
	* makeutl.ads (Source_Info_Option): New constant String for new builder
	switch.
	* prj-conf.adb: Put subprograms in alphabetical order
	(Process_Project_And_Apply_Config): Read/write an eventual source info
	file, if necessary.
	* prj-nmsc.adb (Look_For_Sources.Get_Sources_From_Source_Info): New
	procedure.
	(Look_For_Sources): If a source info file was successfully read, get the
	source data from the data read from the source info file.
	* prj-util.adb (Source_Info_Table): New table
	(Source_Info_Project_HTable): New hash table
	(Create): New procedure
	(Put (File), Put_Line): New procedures
	(Write_Source_Info_File): New procedure
	(Read_Source_Info_File): New procedure
	(Initialize): New procedure
	(Source_Info_Of): New procedure
	(Next): New procedure
	(Close): When file is an out file, fail if the buffer cannot be written
	or if the file cannot be close successfully.
	(Get_Line): Fail if file is an out file
	* prj-util.ads (Create): New procedure
	(Put (File), Put_Line): New procedures
	(Write_Source_Info_File): New procedure
	(Read_Source_Info_File): New procedure
	(Source_Info_Data): New record type
	(Source_Info_Iterator): New private type
	(Initialize): New procedure
	(Source_Info_Of): New procedure
	(Next): New procedure
	* prj.ads (Project_Tree_Data): New components Source_Info_File_Name and
	Source_Info_File_Exists.

From-SVN: r164975