597 – std.socket TcpSocket and UdpSocket are missing.

Somehow this code disappeared from the end of std/socket.d between 0.174 and 0.175:
/// TcpSocket is a shortcut class for a TCP Socket.
class TcpSocket: Socket
{
 /// Constructs a blocking TCP Socket.
 this(AddressFamily family)
 {
 super(family, SocketType.STREAM, ProtocolType.TCP);
 }
 /// Constructs a blocking TCP Socket.
 this()
 {
 this(cast(AddressFamily)AddressFamily.INET);
 }
 //shortcut
 /// Constructs a blocking TCP Socket and connects to an InternetAddress.
 this(Address connectTo)
 {
 this(connectTo.addressFamily());
 connect(connectTo);
 }
}
/// UdpSocket is a shortcut class for a UDP Socket.
class UdpSocket: Socket
{
 /// Constructs a blocking UDP Socket.
 this(AddressFamily family)
 {
 super(family, SocketType.DGRAM, ProtocolType.UDP);
 }
 /// Constructs a blocking UDP Socket.
 this()
 {
 this(cast(AddressFamily)AddressFamily.INET);
 }
}

I hope this wasn't intentional. They weren't even deprecated if so? These 
classes can be very handy. It's like removing the std.file read/write 
functions because there's Stream/File.

Fixed in DMD 0.176.