mesa: fix libgl conflicts

mesa/PKGBUILD

@@ -4,7 +4,7 @@
 pkgbase=mesa
 pkgname=('mesa-libtool' 'mesa' 'mesa-libgl' 'opencl-mesa' 'ati-dri' 'intel-dri' 'nouveau-dri' 'svga-dri')
 pkgver=10.2.2
-pkgrel=4
+pkgrel=5
 arch=('x86_64')
 makedepends=('python2' 'libxml2' 'libx11' 'glproto' 'libdrm' 'dri2proto' 'dri3proto' 'presentproto' 'libxshmfence' 'libxxf86vm'  'libxdamage' 'libvdpau' 'wayland' 'elfutils' 'llvm' 'systemd'
              'libclc' 'clang')
@@ -17,8 +17,6 @@ source=(${source[@]}
 )
 md5sums=('a986ef9c7ca0c7d75f9665c73bd211f4'
          '5c65a0fe315dd347e09b1f2826a1df5a')
-options=("debug" 'libtool')
-
 
 build() {
     cd ${srcdir}/?esa-*
@@ -168,6 +166,7 @@ package_mesa-libgl() {
   pkgdesc="Mesa 3-D graphics library"
   depends=("mesa=${pkgver}")
   provides=("libgl=${pkgver}")
+  conflicts=('libgl')
   replaces=('libgl')
  
   # See FS#26284
@@ -197,6 +196,7 @@ package_mesa-libgl() {
 package_mesa-libtool() {
   depends=(mesa)
   pkgdesc=(Libtool files for mesa)
+  options=(libtool)
 
   # I'm enough of silly *.la build failure and those splitted la pollution everwhere
   install -Dm644 ${srcdir}/fakeinstall/usr/lib/egl/egl_gallium.la ${pkgdir}/usr/lib/egl/egl_gallium.la