repl: Private Buffer object in lib/* files

Fixes usage of global object 'Buffer' in lib/* files by ensuring that
each file does an explicit require('buffer').Buffer.  Previously, when
running a repl, due to usage of global 'Buffer', any redefinition of
Buffer would cause a crash eg var Buffer = {}.

Fixes: nodejs/node-v0.x-archive#8588
PR-URL: nodejs/node-v0.x-archive#8603
Reviewed-by: Trevor Norris <[email protected]>

Conflicts:
	lib/_stream_readable.js
	lib/_stream_writable.js
	lib/assert.js
	lib/dgram.js
	lib/fs.js
	lib/http.js
	lib/net.js
	lib/readline.js
	lib/tls.js
	lib/zlib.js

lib/_stream_readable.js

@@ -5,6 +5,7 @@ Readable.ReadableState = ReadableState;
 
 const EE = require('events').EventEmitter;
 const Stream = require('stream');
+const Buffer = require('buffer').Buffer;
 const util = require('util');
 const debug = util.debuglog('stream');
 var StringDecoder;

lib/_stream_writable.js

@@ -9,6 +9,7 @@ Writable.WritableState = WritableState;
 
 const util = require('util');
 const Stream = require('stream');
+const Buffer = require('buffer').Buffer;
 
 util.inherits(Writable, Stream);
 

lib/assert.js

@@ -27,6 +27,7 @@
 // UTILITY
 const compare = process.binding('buffer').compare;
 const util = require('util');
+const Buffer = require('buffer').Buffer;
 const pSlice = Array.prototype.slice;
 
 // 1. The assert module provides functions that throw

lib/dgram.js

@@ -3,6 +3,7 @@
 const assert = require('assert');
 const util = require('util');
 const events = require('events');
+const Buffer = require('buffer').Buffer;
 const constants = require('constants');
 
 const UDP = process.binding('udp_wrap').UDP;

lib/fs.js

@@ -10,6 +10,7 @@ const pathModule = require('path');
 const binding = process.binding('fs');
 const constants = require('constants');
 const fs = exports;
+const Buffer = require('buffer').Buffer;
 const Stream = require('stream').Stream;
 const EventEmitter = require('events').EventEmitter;
 const FSReqWrap = binding.FSReqWrap;

lib/net.js

@@ -6,6 +6,7 @@ const timers = require('timers');
 const util = require('util');
 const assert = require('assert');
 const cares = process.binding('cares_wrap');
+const Buffer = require('buffer').Buffer;
 const uv = process.binding('uv');
 
 const TTYWrap = process.binding('tty_wrap');

lib/readline.js

@@ -9,6 +9,7 @@
 const kHistorySize = 30;
 
 const util = require('util');
+const Buffer = require('buffer').Buffer;
 const inherits = util.inherits;
 const EventEmitter = require('events').EventEmitter;
 

lib/tls.js

@@ -4,6 +4,7 @@ const net = require('net');
 const url = require('url');
 const util = require('util');
 const binding = process.binding('crypto');
+const Buffer = require('buffer').Buffer;
 
 // Allow {CLIENT_RENEG_LIMIT} client-initiated session renegotiations
 // every {CLIENT_RENEG_WINDOW} seconds. An error event is emitted if more

lib/zlib.js

@@ -3,6 +3,7 @@
 const Transform = require('_stream_transform');
 const binding = process.binding('zlib');
 const util = require('util');
+const Buffer = require('buffer').Buffer;
 const assert = require('assert').ok;
 
 // zlib doesn't provide these, so kludge them in following the same