Adds umask function
Merge #421 r=@kevinmehall: Jon umask
fixed net tests to pass for node and colony

newline

swap back from ok to eq
Merge #430 r=@jiahuang: fixed net tests to pass for node and colony
Adds support for process.version
Merge #436 r=@kevinmehall: Adds support for process.version

@kevinmehall r?
Merge branch 'master' into http-module