Closes:#842608.
* Cope when cloning suite which doesn't receive uploads,
like testing. Closes:#842621.
+ * Properly fetch all archive dgit view tags, as we intended.
+ * Actually provide a -p (--package=) option (!)
+ * dgit-*(7). Many new tutorial manpages, several written and many
+ improved by Sean Whitton.
+ * dgit(7): Substantial updates, including documenting split view.
+ * dgit(1): Better cross-references.
+ * dgit(1): Remove obsolete workflow information.
+ * dgit(1): Improved BUGS section.
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