* 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.
* 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.
