[IA64] Include automated sparse merge script

[IA64] Include automated sparse merge script

This script automates merging the sparse tree to new upstream
kernel revisions.  When possible the files are automatically
patched to the new version, if that fails, the xen and upstream
patches are tried in reverse order, if that fails, the method
producing the smallest reject is left for manual merging.

Run as:

# LINUXPATH=$HOME/linux-2.6 sparse-merge

Where LINUXPATH is a local mercurial tree of the upstream kernel
(available from http://www.kernel.org/hg/linux-2.6).  NEWTAG and
OLDTAG may also be specified if the autodetection does not work.
By default, NEWTAG will be the latest upstream version.  If NEWTAG
or OLDTAG is an extra-version (ex. 2.6.16.13), ketchup will be
used to update the mercurial tree and add the appropriate tag.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Aron Griffis <aron@hp.com>