* qemud/conf.c: add support for connecting a qemu
guest to a bridge using a tap device in order to
connect it to a virtual network.
* qemud/internal.h: add <interface type="network">
config and track tapfds so as to not close them
on exec.
* qemud/qemud.c: don't close tapfds on exec and
disconnect the iface when the guest shuts down.
* configure.in: add --disable-bridge-params, check
for libsysfs and various kernel headers
* bridge.[ch]: add code for managing bridges
* qemud/Makefile.am: add bridge.[ch] and link against
libsysfs if enabled.
* qemud/conf.c: add support for bridge config.
* qemud/internal.h: add various bridging bits
* qemud/qemud.c: implement qemudStartNetworkDaemon()
and qemudShutdownNetworkDaemon().
* qemud/conf.[ch]: implement parsing and saving network
configs.
* qemud/driver.c: flesh out the stubs
* qemud/internal.h: add networks list etc. to
struct qemud_server
* qemud/qemud.c: add qemudStartNetworkDaemon() and
qemudShutdownNetworkDaemon() stubs.
Mark McLoughlin