Fix issues detected by python web-server.

* Removed display of TPL
* Added NOP implementation for SO_REUSEADDR
* Add better detection of socket address
* Return first address

Signed-off-by: lpleahy

Python Web server below:

---------------

import sys
import BaseHTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler


HandlerClass = SimpleHTTPRequestHandler
ServerClass  = BaseHTTPServer.HTTPServer
Protocol     = "HTTP/1.0"

port = 80
server_address = ('', port)

HandlerClass.protocol_version = Protocol
httpd = ServerClass(server_address, HandlerClass)

sa = httpd.socket.getsockname()
print "Serving HTTP on", sa[0], "port", sa[1], "..."
httpd.serve_forever()




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13034 6f19259b-4bc3-4df7-8a09-765794883524

StdLib/EfiSocketLib/Udp4.c

@@ -463,6 +463,7 @@ EslUdp4RemoteAddressSet (
   pUdp4->ConfigData.RemoteAddress.Addr[2] = (UINT8)( pRemoteAddress->sin_addr.s_addr >> 16 );
   pUdp4->ConfigData.RemoteAddress.Addr[3] = (UINT8)( pRemoteAddress->sin_addr.s_addr >> 24 );
   pUdp4->ConfigData.RemotePort = SwapBytes16 ( pRemoteAddress->sin_port );
+  pPort->pSocket->bAddressSet = TRUE;
   Status = EFI_SUCCESS;
 
   //