bug#12260: rm -d in coreutils 8.19

[Robert Day]

It looks as though the bug is that the prompt() function does its own
checking, returning EISDIR unless x->recursive is set, and this code wasn't
updated with the addition of -d. I've attached a patch which fixes this bug
and adds a test of that code path. The fixes can also be retrieved from
https://github.com/rkd91/coreutils_rm_di_patch.

I haven't submitted patches for coreutils before; if there's somewhere else
I should post this patch to, I'm happy to be pointed there.

Best,
Rob

rm.patch
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