ProcessEnvironments now run in a clean shell
ProcessEnvironments now run in a clean shell

Swift Script processEnvironments now runs in a clean shell with OS X Swift SDK, as under certain conditions it caused project to fail to build (Unsupported Architecture #7).
krzysztofzablocki/KZBootstrap,fhchina/KZBootstrap,lumenlunae/KZBootstrap,krzysztofzablocki/KZBootstrap,krzysztofzablocki/KZBootstrap,fhchina/KZBootstrap,lumenlunae/KZBootstrap,makingspace/KZBootstrap,lumenlunae/KZBootstrap,fhchina/KZBootstrap,makingspace/KZBootstrap,makingspace/KZBootstrap,krzysztofzablocki/KZBootstrap,lumenlunae/KZBootstrap,fhchina/KZBootstrap,makingspace/KZBootstrap