Switch Tor Mac Descriptor to new compiler
The Mac descriptor for gitian is still using the old version of the mac cross-compiler, which we no longer download from fetch-inputs.sh. We should update the descriptor to use the same compiler as Firefox.
The Mac descriptor for gitian is still using the old version of the mac cross-compiler, which we no longer download from fetch-inputs.sh. We should update the descriptor to use the same compiler as Firefox.