g-os_lib.ads, [...] (Normalize_Pathname.Get_Directory): Correct obvious bug (return Dir; instead of return Directory;).

2007-04-20  Vincent Celier  <celier@adacore.com>

	* g-os_lib.ads, g-os_lib.adb (Normalize_Pathname.Get_Directory):
	Correct obvious bug (return Dir; instead of return Directory;).
	(Normalize_Pathname): Use Reference_Dir'Length, not Reference_Dir'Last

From-SVN: r125421