tg update bug with perl-squeeze.git

[Dominic Hargreaves]

Hi,

Since I last touched perl-squeeze.git, topgit has apparently become
unhappy. tg update seems to spawn another copy of itself every few
seconds, and after a few hundred processes appeared, I Ctrl-C'd.

Rather than carry out any detailed investigation, I have created a
non-topgit branch which includes the result of a ./debian/rules new-build
on master, together with some additional fixes I'm preparing for release.

-- 
Dominic Hargreaves | http://www.larted.org.uk/~dom/
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