Add zachjs-sv2v package

The recipe is based on 'SymbiFlow/conda-packages' one,
but we forced it to use host's compiler and older
version of Haskell's stack.

Motives were described in this PR:
#12

.travis.yml

@@ -4,6 +4,10 @@ addons:
   homebrew:
     packages:
     update: false
+  apt:
+    update: true
+    packages:
+      - build-essential
 
 stages:
   - name: "No dependencies" # Doesn't depend on anything apart from upstream packages
@@ -70,6 +74,10 @@ jobs:
       os: linux
       env:
       - PACKAGE=capnproto
+    - stage: "No dependencies"
+      os: linux
+      env:
+      - PACKAGE=zachjs-sv2v
 
     - stage: "Has first level dependencies"
       os: linux

zachjs-sv2v/build.sh

@@ -0,0 +1,8 @@
+#! /bin/bash
+
+set -x
+set -e
+
+make
+install -D bin/sv2v $PREFIX/bin/zachjs-sv2v
+

zachjs-sv2v/condarc

@@ -0,0 +1,2 @@
+channels:
+  - conda-forge

zachjs-sv2v/meta.yaml

@@ -0,0 +1,33 @@
+{% set version = '%s_%04i_%s'|format(GIT_DESCRIBE_TAG|replace('v','') or '0.X', GIT_DESCRIBE_NUMBER|int, GIT_DESCRIBE_HASH or 'gUNKNOWN') %}
+
+package:
+  name: zachjs-sv2v
+  version: {{ version }}
+
+source:
+  git_url: https://github.com/zachjs/sv2v.git
+
+build:
+  # number: 201803050325
+  number: {{ environ.get('DATE_NUM') }}
+  # string: 20180305_0325
+  string: {{ environ.get('DATE_STR') }}
+  script_env:
+    - CI
+    - TRAVIS
+
+requirements:
+  build:
+    - stack<2.5.1
+
+test:
+  commands:
+    - zachjs-sv2v --help
+
+about:
+  home: https://github.com/zachjs/sv2v
+  license: BSD
+  license_file:
+    - LICENSE
+    - NOTICE
+  summary: 'sv2v converts SystemVerilog (IEEE 1800-2017) to Verilog (IEEE 1364-2005), with an emphasis on supporting synthesizable language constructs.'