cmd/gofmt: remove -tabwidth and -tabs flags (CL 52170043)
liblink: pull linker i/o into separate liblink C library (CL 35790044) misc/dist: renamed misc/makerelease (CL 39920043)
runtime: output how long goroutines are blocked (CL 50420043)
syscall: add NewCallbackCDecl to use for windows callbacks (CL 36180044)
testing: diagnose buggy tests that panic(nil) (CL 55780043)
testing: add b.RunParallel function (CL 57270043)
misc/benchcmp has been replaced by go tool benchcmp (CL 47980043)
cmd/go, go/build: support .m files (CL 60590044)
unicode: upgrade from Unicode 6.2.0 to 6.3.0 (CL 65400044)
runtime/debug: add SetPanicOnFault (CL 66590044)
crypto/tls: ServerName or InsecureSkipVerify (CL 67010043)
