Merge branch 'issue-119-ci-osx-install-fails' into 'master'

Use /opt/local/bin/curl on OSX instead of /usr/bin/curl

Closes #119

See merge request !82
10 jobs for master in 32 minutes and 2 seconds (queued for 6 seconds)
Status Name Job ID Coverage
  Install
passed linux:install #24198
linux

00:00:42

passed osx:install #24199
osx

00:01:26

 
  Build
passed linux:build #24200
linux

00:06:04

passed osx:build #24201
osx

00:08:58

 
  Test
passed linux:test #24202
linux

00:02:54

passed osx:test #24203
osx

00:02:41

 
  Ansi Test
passed linux:ansi-test #24204
linux

00:05:57

passed osx:ansi-test #24205
osx

00:07:58

 
  Benchmark
passed linux:benchmark #24206
linux

00:07:37

passed osx:benchmark #24207
osx

00:05:42