what exactly are you talking about ? if you install libpng-1.5, you must rebuild all packages that use libpng-1.4. it isnt a bug if packages already on your system still refer to libpng-1.4 if you havent rebuilt them.
Maybe we could drop .la files for old gdm... but I am not sure :-/
(In reply to comment #3)
> Maybe we could drop .la files for old gdm... but I am not sure :-/
consider that a pong also for https://bugs.gentoo.org/show_bug.cgi?id=362957
just to say as i see empty CC list, i'm not sure if you are expect a pong from me or from anyone that is part of the two "Assigned To" list.
+*gdm-2.20.11-r1 (11 Sep 2011)
+ 11 Sep 2011; Pacho Ramos <firstname.lastname@example.org> +gdm-2.20.11-r1.ebuild:
+ Wait more before assuming Xserver is defunct (bug #378765 by Enrique
+ Domínguez), this change also solves a problem I was suffering for ages where
+ gdm had problems to restart on systems under heavy load. Also drop .la files
+ (bug #362961 by Stéphane Pagnon).