* qemud/qemud.c, qemud/dispatch.c, qemud/internal.h
        qemud/conf.c, qemud/driver.c, configure.in: add a
        qemudLog() function which uses syslog() if we're in daemon
        mode, doesn't output INFO/DEBUG messages unless the
        verbose flag is set and doesn't output DEBUG messages
        unless compiled with --enable-debug. Also, make a first
        pass through fatal errors and add error messages for them.

        * qemud/conf.c: fix <interface type='network'> output

        * qemud/conf.c: fix the <graphics> output - we weren't
        handling sdl

        * qemud/conf.c: fix a couple of typos

        * qemud/conf.c: fix segfault

        * qemud/bridge.c: don't output bridge parameters if they
        are the default.

	* qemud/conf.[ch], qemud/dispatch.c, qemud/internal.h,
	  qemud/qemud.c, qemud/driver.c: allow re-defining network
	configs; basically copying dan's patch for domains.

        * qemud/conf.c: fix a couple of qemud_vm_def leaks

        * driver.c: simplify qemudDomainDefine()

        * qemud/iptables.[ch]: add code for managing iptables
        rules.

        * qemud/Makefile.am: add iptables.[ch].

        * qemud/qemud.c: add and remove iptables rules as
        appropriate.

        * qemud/conf.c: when starting a guess, add a rule
        allowing it to forward packets across the networks
        bridge.

        * qemud/internal.h: add iptables context ptr

        * configure.in: add --with-iptables-dir and
        --with-iptables-prefix to allow us to put our rules
        in a chain with the given prefix and save the rules
        in files in the given dir so as to integrate with
        the proposed "service iptables restart" solution
        in:

           https://bugzilla.redhat.com/227011

        * 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.

        * qemud/conf.c, qemud/internal.h: add dhcp config

        * qemud/qemud.c: start dnsmasq to provide dns/dhcp
        for virtual networks.

        * 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().

        * src/conf.c: qemudSaveConfig() will always report a
        more specific error, so we should avoid overwriting
        this error.

        * 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.

        * qemud/qemud.c: Re-factor out qemudExec() so that it can
        be used to launch dnsmasq.

        * qemud/conf.c: don't return argc from qemudBuildCommandLine()
        as exec() doesn't need it.

        * qemud/conf.c: Re-factor bits of conf.c so that:

          - qemudMakeConfigPath() can be re-used given another configDir
          - split qemudEnsureConfigDir() out of qemudSaveConfig() so
            that it may be re-used to create another configDir
          - split qemudScanConfigDir() out so that qemudScanConfigs()
            can scan multiple configDirs

        * qemud/conf.c: handle an unspecified MAC address,
        fix the argv freeing code in qemudBuildCommandLine()
        and fix copy and paste error in qemudGenerateXML()

        * qemud/conf.c, qemud/dispatch.c, qemud/driver.c,
          qemud/qemud.c: include autoconf's config.h

        * conf.[ch]: rename from config.[ch] so we can use
        autoconf's config.h

        * Makefile.am: update

        * driver.c, qemud.c: upd.