put xen console message into syslog but xm dmesg is not affected

diff -r 8e55c5c11475 tools/misc/xenlogd.README
@@ -0,0 +1,13 @@
+xenlogd is the logging daemon of the Xen message.
+This daemon outputs the messege to syslog if messages were found
+in the console ring by the polling every one second.
+
+Following is the usage, but usually no option is necessary.
+It will automatically be daemon.
+
+usage: xenlogd [-h] [-k] [-r]
+       -h: print help
+       -k: kill alive logging daemon
+       -r: restart logging daemon after kill alive one
+
+