cmd/fix: add runtime renamings

R=golang-dev, dsymonds, r
CC=golang-dev
https://golang.org/cl/5685043

src/cmd/fix/go1rename.go

@@ -56,4 +56,16 @@ var go1renameReplace = []rename{
 		Old:       "os.Exec",
 		New:       "syscall.Exec",
 	},
+	{
+		OldImport: "runtime",
+		NewImport: "",
+		Old:       "runtime.Cgocalls",
+		New:       "runtime.NumCgoCall",
+	},
+	{
+		OldImport: "runtime",
+		NewImport: "",
+		Old:       "runtime.Goroutines",
+		New:       "runtime.NumGoroutine",
+	},
 }

src/cmd/fix/go1rename_test.go

@@ -18,6 +18,7 @@ import (
 	"crypto/des"
 	"net/url"
 	"os"
+	"runtime"
 )
 
 var (
@@ -29,6 +30,8 @@ var (
 	_ = url.ParseWithReference
 	_ = url.ParseRequest
 	_ = os.Exec
+	_ = runtime.Cgocalls
+	_ = runtime.Goroutines
 )
 `,
 		Out: `package main
@@ -37,6 +40,7 @@ import (
 	"crypto/aes"
 	"crypto/cipher"
 	"net/url"
+	"runtime"
 	"syscall"
 )
 
@@ -49,6 +53,8 @@ var (
 	_ = url.Parse
 	_ = url.ParseRequestURI
 	_ = syscall.Exec
+	_ = runtime.NumCgoCall
+	_ = runtime.NumGoroutine
 )
 `,
 	},