Removed bytes.Add and bytes.AddByte; we now have 'append'.
Changed all uses of bytes.Add (aside from those testing bytes.Add) to append(a, b...).
Also ran "gofmt -s" and made use of copy([]byte, string) in the fasta benchmark.

R=golang-dev, r, r2
CC=golang-dev
https://golang.org/cl/3302042
diff --git a/src/pkg/json/scanner_test.go b/src/pkg/json/scanner_test.go
index 82d520b..b90f581 100644
--- a/src/pkg/json/scanner_test.go
+++ b/src/pkg/json/scanner_test.go
@@ -147,7 +147,7 @@
 		t.Errorf("invalid rest: %d", len(rest))
 	}
 
-	item, rest, err = nextValue(bytes.Add(jsonBig, []byte("HELLO WORLD")), &scan)
+	item, rest, err = nextValue(append(jsonBig, []byte("HELLO WORLD")...), &scan)
 	if err != nil {
 		t.Fatalf("nextValue extra: ", err)
 	}
diff --git a/src/pkg/json/stream.go b/src/pkg/json/stream.go
index d4fb346..cb9b165 100644
--- a/src/pkg/json/stream.go
+++ b/src/pkg/json/stream.go
@@ -5,7 +5,6 @@
 package json
 
 import (
-	"bytes"
 	"io"
 	"os"
 )
@@ -177,7 +176,7 @@
 	if m == nil {
 		return os.NewError("json.RawMessage: UnmarshalJSON on nil pointer")
 	}
-	*m = bytes.Add((*m)[0:0], data)
+	*m = append((*m)[0:0], data...)
 	return nil
 }