define PKGCONFIGDIR in terms of LIBDIR

This will give the same result for the common case, but one does not have to
explicitely override PKGCONFIGDIR if LIBDIR is set, as it will automatically
move to the right place, too.

Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
1 file changed