various: gocheck, checkers, imports fixes

rpc/jsoncodec/conn.go

 package jsoncodec
 
 import (
-        "code.google.com/p/go.net/websocket"
         "encoding/json"
         "net"
+
+        "code.google.com/p/go.net/websocket"
 )
 
 // NewWebsocket returns an rpc codec that uses the given websocket
 // connection to send and receive messages.
 func NewWebsocket(conn *websocket.Conn) *Codec {
         return New(wsJSONConn{conn})
 }
 
 type wsJSONConn struct {
         conn *websocket.Conn
@@ skipping 31 matching lines @@
         return conn.enc.Encode(msg)
 }
 
 func (conn *netConn) Receive(msg interface{}) error {
         return conn.dec.Decode(msg)
 }
 
 func (conn *netConn) Close() error {
         return conn.conn.Close()
 }