Infrastructure:
* Better error handling in dgit-repos-policy-debian.
+ * dgit-repos-policy-debian.: fix git-cat-file-handling with multiple
+ taints in db (!).
Documentation:
* Document the dgit-distro.DISTRO.quilt-mode config setting.
* Test quilt single-debian-patch.
* Provide `tartree-edit gitfetchinfo' etc. to help with comparing
different test case git working tree tarballs.
+ * Test dgit-repos-policy-debian with multiple (identical, as it happens)
+ existing taints.
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