ports: Split mesa into two packages: osmesa, glx

Now SDL and other stuff that use opengl dont have to pull X11 libraries

We now also compile glx backend with DRI instead of xlib. This allows
building EGL support as well!

ports/libepoxy/build.sh

@@ -3,11 +3,11 @@
 NAME='libepoxy'
 VERSION='1.5.10'
 DOWNLOAD_URL="https://download.gnome.org/sources/libepoxy/1.5/libepoxy-$VERSION.tar.xz#072cda4b59dd098bba8c2363a6247299db1fa89411dc221c8b81b8ee8192e623"
-DEPENDENCIES=('mesa' 'libX11')
+DEPENDENCIES=('mesa-glx' 'libX11')
 CONFIGURE_OPTIONS=(
 	'-Dprefix=/usr'
+	'-Dbuildtype=release'
 	'-Dtests=false'
-	'-Degl=no'
 )
 
 configure() {