Drops mason-installed packages Boost, zlib, libpng, libuv and glfw.
Adds libtool and automake, which may be needed when mason binaries
are not available.
Drops ImageMagick, which was replaced with pixelmatch in
aaf090b87d &
https://github.com/mapbox/mapbox-gl-test-suite/pull/50
Cellular carrier name and connectivity level will now only be sent if
the developer independently chooses to link the CoreTelephony framework
in their app.
