Mageia fixes for architecture

src/mageia.ipxe

@@ -7,7 +7,6 @@ goto ${menu}
 
 :mageia
 set os Mageia
-isset arch5 && set arch i586
 menu Mageia Installers ${arch}
 item 5 ${os} 5
 item 4 ${os} 4
@@ -18,11 +17,12 @@ goto mageia_boot
 :mageia_boot
 set server mirrors.kernel.org
 set mirror http://${server}
-set dir mageia/distrib/${version}/${arch}
+set dir mageia/distrib/${version}/x86_64/isolinux/x86_64
+iseq ${arch} i386 && set dir mageia/distrib/${version}/i586/isolinux/i386 ||
 set automatic method:http,network:dhcp,server:${server},directory:/${dir}
 imgfree
-kernel ${mirror}/${dir}/isolinux/${arch}/vmlinuz
-initrd ${mirror}/${dir}/isolinux/${arch}/all.rdz
+kernel ${mirror}/${dir}/vmlinuz
+initrd ${mirror}/${dir}/all.rdz
 imgargs vmlinuz automatic=${automatic} vga=788 splash=silent
 boot || goto mageia