Auto merge of #4238 - ashleygwilliams:policies, r=steveklabnik
Auto merge of #4238 - ashleygwilliams:policies, r=steveklabnik

updates to policies

based on convo with @withoutboats and @carols10cents

tsurai/cargo,nipunn1313/cargo,achanda/cargo,eminence/cargo,rust-lang/cargo,achanda/cargo,nipunn1313/cargo,rustyhorde/cargo,vojtechkral/cargo,eminence/cargo,tsurai/cargo,tsurai/cargo,achanda/cargo,tsurai/cargo,eminence/cargo,vojtechkral/cargo,rust-lang/cargo,rustyhorde/cargo,rustyhorde/cargo,rustyhorde/cargo,rust-lang/cargo,tshepang/cargo,rust-lang/cargo,achanda/cargo,tsurai/cargo,tshepang/cargo,nipunn1313/cargo,eminence/cargo,vojtechkral/cargo,vojtechkral/cargo,tshepang/cargo,nipunn1313/cargo,tshepang/cargo