message: Add note about using the Qt official binary installer.
diff: Mac OS X Build Instructions and Notes
  ====================================
  -This guide will show you how to build bitcoind (headless client) for OS X.
  +This guide will show you how to build Bitcoin Core for OS X.
  Notes
  -----
  @@ -117,3 +117,13 @@ Other commands:
  ./bitcoind -daemon # to start the bitcoin daemon.
  ./bitcoin-cli --help # for a list of command-line options.
  ./bitcoin-cli help # When the daemon is running, to get a list of RPC commands
  +
  +Using Qt official installer while building
  +------------------------------------------
  +
  +If you prefer to use the latest Qt installed from the official binary
  +installer over the brew version, you have to make several changes to
  +the installed tree and its binaries (all these changes are contained
  +in the brew version already). The changes needed are described in
  +[#7714](https://github.com/bitcoin/bitcoin/issues/7714). We do not
  +support building Bitcoin Core this way though.
  