Fix documentation for f55132a24593a7e172d417fea0b64a45c3a3c6fe (Supporting wxmac from MacPorts, #20) and clean-up a bit.
Merge branch 'rust-servo' into rust-0.8: Fix documentation for f55132a24593a7e172d417fea0b64a45c3a3c6fe (Supporting wxmac from MacPorts, #20) and clean-up a bit.