Fix configure options in qemu.

component/qemu-kvm/buildout.cfg

 [buildout]
-extends = 
+extends =
   ../../component/gnutls/buildout.cfg
   ../../component/libpng/buildout.cfg
   ../../component/libuuid/buildout.cfg
@@ -16,7 +16,9 @@ recipe = slapos.recipe.cmmi
 url = http://wiki.qemu-project.org/download/qemu-1.4.1.tar.bz2
 md5sum = eb2d696956324722b5ecfa46e41f9a75
 configure-options =
-  --target-list=""
+  --target-list="x86_64-softmmu i386-softmmu"
+  --enable-system
+  --with-system-pixman
   --disable-sdl
   --disable-xen
   --enable-vnc-tls
@@ -34,4 +36,3 @@ configure-options =
 environment =
   PATH=${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${gnutls:location}/lib/pkgconfig:${glib:location}/lib/pkgconfig:${pixman:location}/lib/pkgconfig
-