dnscrypt-proxy: minor superficial improvements

- Use upstream description and explicitly set platforms = all
- Coding conventions fix
macchanger: new expression

GNU macchanger is a tool for viewing/changing the MAC
address of a network device, with support for address
randomisation.
add sqliteman package
synergy: 1.5.1 -> 1.6.1
boost: Add 1.57.0
kernel: 3.14.24 -> 3.14.25
nixos/etcd: fix postStart check and make tests deterministic
containers: remove obsolete comment
js_of_ocaml: propagate lwt dependency
updated to v0.150.0 and fixed apm LD_LIBRARY_PATH
Behave in a sane way in ZXing wrapper when user gives --help argument
Remove cups_pdf_filter from the default set - adding to default set is easier than removing...
Merge pull request #5092 from mirdhyn/atom.io

updated Atom Editor to v0.150.0 and fixed apm LD_LIBRARY_PATH
Merge pull request #5081 from joachifm/macchanger

macchanger: new expression
Adding Alpine mail reader
Fix the libgcc_s problem in alpine
Add realpine alpine continuation
fetchurl: friendly message if hash is not given
cups-pdf-filter -> cups-filters, enable by default for cups
haskellPackages.hspecContrib: add 0.2.0