kdeconnect: upgrade from 0.7.2 to 0.7.3 add new dependency: libfakekey

libfakekey is an X virtual keyboard library
Update to hscope 0.4.1
threadscope: allow building with GHC 7.8.3, and on recent OS X
macvim: Update sha256
coq_HEAD: update to latest commit
Update Lazarus
Update Squid proxy
Update ioping
Update GCL
Adding FontTools
Update Liberation fonts
Update mdds library
Update lib-re
Update libmwaw
Update LibreOffice
Undo some changes only appropriate for the clang fork
Add Nginx 1.7.7; RTMP module fails for some reason
Add a binary-distribution-based Liberation fonts package
nix-prefetch-git: run single-threaded 'git repack'

Without this, the generated pack files are non-deterministic.

I didn't notice this issue in my earlier testing, because my test repo
had too few commits for the thread scheduling to take effect. (Test repo
had about 10 commits.)
ocaml-lwt: fixes build with OCaml 3.12 and 4.02