Include the OpenNebula driver

* src/opennebula/one_conf.[ch] src/opennebula/one_driver.[ch]:
  the OpenNebula driver
* configure.in include/libvirt/virterror.h qemud/Makefile.am
  qemud/qemud.c src/Makefile.am src/domain_conf.[ch] src/driver.h
  src/libvirt.c src/virterror.c: integration of the OpenNebula
  driver in the libvirt infrastructure
* AUTHORS: add Abel Miguez Rodriguez
daniel

configure.in

@@ -190,6 +190,8 @@ AC_ARG_WITH([vbox],
 [  --with-vbox             add VirtualBox support (on)],[],[with_vbox=yes])
 AC_ARG_WITH([lxc],
 [  --with-lxc              add Linux Container support (on)],[],[with_lxc=yes])
+AC_ARG_WITH([one],
+[  --with-one              add ONE support (on)],[],[with_one=no])
 AC_ARG_WITH([test],
 [  --with-test             add test driver support (on)],[],[with_test=yes])
 AC_ARG_WITH([remote],
@@ -309,6 +311,11 @@ if test "$with_uml" = "yes" ; then
 fi
 AM_CONDITIONAL([WITH_UML], [test "$with_uml" = "yes"])
 
+if test "$with_one" = "yes" ; then
+    AC_DEFINE_UNQUOTED([WITH_ONE],1,[whether ONE driver is enabled])
+fi
+AM_CONDITIONAL([WITH_ONE],[test "$with_one" = "yes"])
+
 if test "$with_test" = "yes" ; then
     AC_DEFINE_UNQUOTED([WITH_TEST], 1, [whether Test driver is enabled])
 fi
@@ -410,6 +417,15 @@ dnl check for kvm headers
 dnl
 AC_CHECK_HEADERS([linux/kvm.h])
 
+dnl OpenNebula driver Compilation setting
+dnl
+
+if test "$with_one" = "yes" ; then
+ CFLAGS="$CFLAGS -I$ONE_LOCATION/include"
+ ONE_LIBS="-L/usr/local/lib -lxmlrpc_client++ -lxmlrpc -lxmlrpc_util -lxmlrpc_xmlparse -lxmlrpc_xmltok -lxmlrpc++ -lxmlrpc_client -L$ONE_LOCATION/lib -loneapi"
+ AC_SUBST([ONE_LIBS])
+fi
+
 dnl Need to test if pkg-config exists
 PKG_PROG_PKG_CONFIG
 
@@ -1414,6 +1430,7 @@ AC_MSG_NOTICE([     UML: $with_uml])
 AC_MSG_NOTICE([  OpenVZ: $with_openvz])
 AC_MSG_NOTICE([    VBox: $with_vbox])
 AC_MSG_NOTICE([     LXC: $with_lxc])
+AC_MSG_NOTICE([     ONE: $with_one])
 AC_MSG_NOTICE([    Test: $with_test])
 AC_MSG_NOTICE([  Remote: $with_remote])
 AC_MSG_NOTICE([ Network: $with_network])