Backport #14701: build: Add CLIENT_VERSION_BUILD to CFBundleGetInfoString (#2687)
Backport #14701: build: Add CLIENT_VERSION_BUILD to CFBundleGetInfoString (#2687)

8e209340c85fc2493d7d1d7affe7e316bb613cbd build: Add CLIENT_VERSION_BUILD to CFBundleGetInfoString (fanquake)

Pull request description:

  As mentioned in #14697, if you download the `0.17.0.1` dmg, and inspect the `.app` bundle, the version in the GetInfo string reads `0.17.0`, which is confusing given you're expecting `0.17.0.1`:
  <img width="391" alt="0 17 0 1" src="https://user-images.githubusercontent.com/863730/48300032-fbb54b00-e510-11e8-9bcd-77e1fffffc63.png">

  This PR adds `CLIENT_VERSION_BUILD` to the string, so that the full version number is displayed, i.e:
  <img width="327" alt="this pr" src="https://user-images.githubusercontent.com/863730/48300015-7893f500-e510-11e8-98b9-80424719a082.png">

Tree-SHA512: f553253d03283639cc4dda00c8004b5c63ae2b489762e5e8c666166e71b14e672792c1df678f87484d51d153b5781c5ec1b145774096600f504833024ae8baea
nmarley/dash,thelazier/dash,nmarley/dash,UdjinM6/dash,ionomy/ion,ionomy/ion,dashpay/dash,nmarley/dash,nmarley/dash,dashpay/dash,thelazier/dash,nmarley/dash,thelazier/dash,thelazier/dash,UdjinM6/dash,ionomy/ion,dashpay/dash,ionomy/ion,dashpay/dash,thelazier/dash,UdjinM6/dash,UdjinM6/dash,UdjinM6/dash,dashpay/dash,ionomy/ion,nmarley/dash,ionomy/ion,nmarley/dash