openvswitch: disable MIPS16

Signed-off-by: Steven Barth <steven@midlink.org>
openvswitch: move openvswitch-common/postinst after install
openvswitch: merge openvswitch-common + openvswitch-switch into openvswitch
openvswitch: organize openvswitch-ipsec and openvswitch-benchmark as subpackages
openvswitch: change order of the installs
openvswitch: fix package URL