pkg net/http, type Transport struct, DialTLS func(string, string) (net.Conn, error)

# CL 132750043 net/http/httputil: Pass a Logger to ReverseProxy, allowing the user to control logging., Mark Theunissen <mark.theunissen@gmail.com>
pkg net/http/httputil, type ReverseProxy struct, ErrorLog *log.Logger

# CL 148370043 os, syscall: add Unsetenv, Brad Fitzpatrick <******@****.***>
pkg os, func Unsetenv(string) error