[xen-tools] Multiple role scripts ..

[Steve Kemp]

  As of last night it is now possible to specify
 multiple role scripts, via something like this:

    --role=builder,misc

  (Of course it doesn't always make sense to do
 this - really it is designed more for people who
 write their own roles.)

  The only downside I see is that both role scripts
 will recieve identical arguments, via '--role-args'.

  If you have any interesting role scripts you wish
 to share please post a link on the list, or mail
 me the file and I'll ensure it is added to the
 distribution.

Steve
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