user/glu: Use libglvnd instead of Mesa

user/glu/APKBUILD

 # Maintainer: A. Wilcox <awilfox@adelielinux.org>
 pkgname=glu
 pkgver=9.0.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Mesa OpenGL Utility library"
 url="https://cgit.freedesktop.org/mesa/glu/"
 arch="all"
 options="!check"  # No test suite.
 license="SGI-B-1.1 AND SGI-B-2.0"
 depends=""
-depends_dev="mesa-dev"
+depends_dev="libglvnd-dev"
 makedepends="$depends_dev"
 subpackages="$pkgname-dev"
 source="ftp://ftp.freedesktop.org/pub/mesa/glu/glu-$pkgver.tar.gz"