Resolves: dbus#146

The launchd plist file for macOS contains the deprecated fields
`OnDemand` and `ServiceIPC`. These fields were deprecated in macOS 10.5
and, since 10.4 and below are well beyond their support lifespans,
they should be removed and replaced appropriately.
11 jobs for macos-launchd-deprecation in 10 minutes and 21 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
passed #4700013
build:cmake

00:03:06

passed #4700010
build:debug

00:07:17

manual #4700015
allowed to fail manual
build:i686-w64-mingw32-cmake
passed #4700014
build:i686-w64-mingw32-debug

00:04:56

manual #4700012
allowed to fail manual
build:legacy
passed #4700009
build:production

00:04:16

manual #4700011
allowed to fail manual
build:reduced
manual #4700018
allowed to fail manual
build:stretch
passed #4700016
build:x86_64-w64-mingw32

00:04:39

passed #4700017
build:x86_64-w64-mingw32-cmake-debug

00:10:19

manual #4700019
allowed to fail manual
build:xenial