udisks: update from 1.0.4 to 1.0.5
maxima: update from 5.33.0 to 5.34.1
ocaml-reactivedata: new package

reactiveData is an OCaml module for functional reactive programming
(FRP) based on React.

Homepage: https://github.com/hhugo/reactiveData
ocaml-pgocaml: new package

PG'OCaml provides an interface to PostgreSQL databases for OCaml
applications.

Homepage: http://pgocaml.forge.ocamlcore.org/
ocaml-macaque: new package

MaCaQue (or macaque) is a DSL for SQL Queries in Caml.

Homepage: https://github.com/ocsigen/macaque
zfs: zpool-import service must be wanted to start
Revert "pcre: update from 8.35 to 8.36" - that's a job for staging

This reverts commit b5f1e0eb08ff4c848d54068fbbe38662c23e606e.
Update libgdiplus' giflib patch to work with 5.1.0

closes issue #4469
Update giflib to 5.1 properly, by using 5.1.nix rather than 5.0.nix
smplayer: update from 14.3.0 to 14.9.0
smtube: new package

SMTube allows to search, play and download Youtube videos.

Homepage: http://smplayer.sourceforge.net/smtube.php
Merge pull request #4467 from vbgl/ocaml

Adds three OCaml libraries: reactiveData, PG’OCaml and MaCaQue
Merge pull request #4465 from vbgl/maxima

maxima: update from 5.33.0 to 5.34.1
Merge pull request #4471 from vbgl/smplayer

Updates SMPlayer to 14.9.0 and adds SMTube
haskellPackages.linuxInotify: New expression
Merge pull request #4402 from NixOS/udisks-1.0.5

udisks: update from 1.0.4 to 1.0.5
stunnel 5.05
icedtea7 requires giflib 5.0
mpd: fix URL

Stable is now 0.19; we're not updating to 0.19 yet because upstream
forgot to include a necessary file in the 0.19 tarball.

FTR 0.19 requires boost and icu as dependencies

cc @astsmtl
sxiv: 1.1.1 - 1.2