Add OSGEARTH-QT4 from brewsci/homebrew-science (#638)
Add OSGEARTH-QT4 from brewsci/homebrew-science (#638)

* MacOS.prefer_64_bit? deprecated

* add bottles

OSGeo/homebrew-osgeo4mac,OSGeo/homebrew-osgeo4mac,OSGeo/homebrew-osgeo4mac