bin/121684: dump frequently hangs

[Michael Butler]

Lawrence Farr wrote:
> I couldn't get this to apply cleanly against 7, is it safe to use rev
> 1.48 on 7? I have 3 machines here that hang whilst dumping and I'd
> like to test the patch.

For RELENG_7, I'm using the attached. Apply it from /usr,

	Michael

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