The attached patch removes all of the console handling code from Xend

The attached patch removes all of the console handling code from Xend
and changes xm to simply exec /usr/libexec/xen/xc_console.

I've done a pretty good amount of testing and this seems to clear up all
of the Xend console issues in bugzilla.

This is a pretty big change to Xend though with a lot of deleted code so
I'd appreciate if people more familiar with the Xend codebase could look
through it critically.

In addition to the patch, the following files are no longer used:

tools/python/xen/util/console_client.py
tools/python/xen/xend/XendConsole.py
tools/python/xen/xend/server/SrvConsole.py
tools/python/xen/xend/server/SrvConsoleDir.py
tools/python/xen/xend/server/console.py

Regards,

Anthony Liguori

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