conkeror: upgrade to more recent snapshot

needed for scripting Downloads.jsm with Gecko >= 26
unison: upgrade to 2.40.102
psmisc: the tarball got updated upstream

looking at our git history, I think it is very peculiar that we
managed to have this version (22.21) 2 months before release :)

So I think we were using some beta/rc that accidentally got called
22.21
libarchive: patch checksum failure

Probably github changed some headers in their patch output.
I verified other sources for CVE2013-0211 and the patch seems the
same.