makedumpfile-1.1.5: Xen support

[Dave Anderson]

> Changelog:
> o Add a new feature that extracting the part of xen hypervisor and
>   domain-0 from /proc/vmcore. In most cases under xen environment,
>   it is enough to analyze a cause of system crash.
>   The patch was provided by Itsuro Oda.
>   Usage:
>     # makedumpfile -E --xen-syms xen-syms /proc/vmcore dumpfile

Can you verify that the dumpfile created above is usable as both a
hypervisor dumpfile as well as a dom0 vmlinux dumpfile?  In other
words, can both of the following sessions be accomplished with the
resultant dumpfile?

  # crash xen-syms dumpfile

and:

  # crash vmlinux dumpfile

Thanks,
   Dave