* qemud/conf.c: fix another xml property leak.

        * qemud/conf.c: use strerror(errno) in some error messages
        to make them a bit more useful

        * qemud/conf.c: don't free active networks/vms if we
        fail to save the new config

        Fix a few leaks

        * qemud/qemud.c: qemudCleanup(): free the socket
        structures

        * qemud/conf.c: fix various leaks in the xml parsing

        * qemud/iptables.c: fix a typo causing a leak

        * qemud/conf.c, qemud/qemud.c: only create config dirs
        when actually trying to write out config.

        * qemud/bridge.c: change the fix for the alignment warning
        a little.

        * qemud/qemud.c: clean up qemudInitialize() and qemudListen()
        so as to coalesce the two "system vs. user" code paths and
        fix up some problems noticed by dan.

        * qemud/qemud.c: don't shutdown guest and networks on
        SIGHUP

        * qemud/qemud.c: handle SIGQUIT.

        * 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/internal.h, qemud/qemud.c: improve signal handling
        and handle SIGHUP by shutting down all guests and networks
        and re-loading configs, and handle SIGINT and SIGTERM
        by shutting down cleanly.

	* qemud/qemud.c, qemud/bridge.c, qemud/iptables.c: fix
	our FD_CLOEXEC usage so that all fds which should be
	closed on exec are marked as such and that we leave
	exec() to do the actual closing.

        * qemud/qemud.c: fix qemudEnableIpForwarding() to not leak
        an fd if writing to /proc/sys/net/ipv4/ip_forward fails.

        * 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/conf.h: move qemudFreeVMDef() down a bit

        * 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/Makefile.am: avoid -Werror
daniel

        * 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

        * include/libvirt/libvirt.h.in, src/libvirt.c: add
        virNetworkGetBridgeName() to allow finding out what
        bridge to connect to in order to join a network.

        * src/driver.h: add networkGetBridgeName() to vtable.

        * qemud/protocol.h: add the request and reply to
        the qemud protocol.

        * qemud/dispatch.c, qemud/driver.[ch]: handle them
        here.

        * src/qemu_internal.c: implement GetBridgeName()
        in the qemu driver.

        * src/libvirt_sym.version: add new symbol.

        * 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.

        * src/conf.h: fix merge error - remove the argc argument
        from qemudBuildCommandLine()

        * 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/protocol.h: add the protocol for virtual networks

        * qemud/dispatch.c: implement the protocol

        * qemud/driver.[ch]: add stubs for the driver

        * qemud/internal.h: add struct qemud_network

        * src/qemu_internal.c: add a virtual networks driver

        * 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()