cgit and busybox gzip
this commit broke use of busybox gzip: http://git.zx2c4.com/cgit/commit/?id=055e092a330098f6b9177266facf43029dbe1883
we (someone) should patch busybox gzip to support the -n flag.
(from redmine: issue id 2022, created on 2013-05-28)
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