snames.adb, snames.ads: Add new standard name runtime_library_dir

2007-10-15  Vincent Celier  <celier@adacore.com>

	* snames.adb, snames.ads: Add new standard name runtime_library_dir

	* prj.ads (Language_Config): Add new component Runtime_Library_Dir

	* prj-attr.adb: Add project level attribute Runtime_Library_Dir

	* prj-env.adb (Create_Mapping_File): Do not put an entry if the path of
	the source is unknown.

	* prj-ext.adb: Spelling error fix

	* prj-nmsc.adb (Check_Ada_Name): Reject any unit that includes an Ada
	95 reserved word in its name.
	(Process_Project_Level_Array_Attributes): Process new attribute
	Runtime_Library_Dir.

	* prj-part.adb (Parse_Single_Project): Do not check the name of the
	config project against the user project names.

	* prj-proc.adb (Expression): In multi-language mode, indexes that do
	not include a dot are always case insensitive.
	(Process_Declarative_Items): Ditto
	(Process_Project_Tree_Phase_1): Set Success to False in case an error is
	detected.

	* prj-util.adb (Value_Of (In_Array)): When Force_Lower_Case_Index is
	True, compare both indexes in lower case.

From-SVN: r129329