--libdir is ignored by ./configure

[Heiko Baums]

I'm using fbsplash on Arch Linux. Since the Arch Linux devs currently
move /lib to /usr/lib and remove /lib resp. replace it with a symlink
to /usr/lib I need to move fbsplash to /usr/lib, too.

I'm currently building fbsplash with
./configure --prefix=/usr --sysconfdir=/etc --without-klibc
--enable-fbcondecor --with-gpm --with-mng --with-png --with-ttf
--with-ttf-kernel

To do the move I tried to add
--libdir=/usr/lib

This should replace every @libdir@ with /usr/lib. Instead @libdir@ is
replaced by just / which leads to a //lib instead of a /usr/lib in
every script and binary.

It would be nice if this could be fixed.

Cheers,
Heiko