This is the first patch to move the console code out of Xend and into a

separate daemon.  In this patch I've included the daemon and a 
front-end.  I've also have the console code removed from Xend locally 
but I wanted to clarify a few things first before submitting that.

Here's how it works:

1) Daemon sits on control channel (via xcs) waiting for console messages
2) Buffers all console data received
3) Publishes the location of a tty that can be used for reading in 
/console/<domid>/tty
4) Reads a value from the store to determine what the limit of console 
data should be (/console/<domid>/limit) to prevent DoS attacks

Using it is quite simple, just run consoled and use the xc_console 
program to connect to the console.  It uses syslog for logging.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

tools/Makefile

@@ -13,6 +13,7 @@ SUBDIRS += xcutils
 #SUBDIRS += pygrub
 SUBDIRS += firmware
 SUBDIRS += security
+SUBDIRS += consoled
 
 .PHONY: all install clean check check_clean ioemu eioemuinstall ioemuclean
 

tools/Rules.mk

@@ -4,6 +4,8 @@ include $(XEN_ROOT)/Config.mk
 
 XEN_XC             = $(XEN_ROOT)/tools/python/xen/lowlevel/xc
 XEN_LIBXC          = $(XEN_ROOT)/tools/libxc
+XEN_XCS            = $(XEN_ROOT)/tools/xcs
+XEN_XENSTORE       = $(XEN_ROOT)/tools/xenstore
 
 ifeq ($(XEN_TARGET_ARCH),x86_32)
 CFLAGS  += -m32 -march=i686