* qemud/conf.[ch]: significantly re-factor qemudLoadConfigXML()
        so that "parse the XML", "assign the def to a VM" and
        "save the XML" operations are in separate functions.
        Add qemudRemoveInactiveVM() and qemudRemoveInactiveNetwork().
        Report errors when loading config files at startup. Check
        that a domain/network's name matches the config filename.

        * qemud/driver.c: update the Create() and Define() functions
        to explicitly parse/assign/save. Also, fix bug where if
        Create() failed, we would free the VM without removing it
        from the inactive list.

        * qemud/qemud.c: use qemudRemoveInactiveVM/Network()

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

	* 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.

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

        * 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.

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

        * Makefile.am: update

        * driver.c, qemud.c: upd.