add tiny cross-platform TCP socket library from https://github.com/DFHack/clsocket

(todo: hook-up to Bullet cmake/premake build systems, and implement TCP alternative for UDP server)

test/clsocket/QueryDayTime.cpp

@@ -0,0 +1,49 @@
+
+#include <string.h>
+#include "ActiveSocket.h"       // Include header for active socket object definition
+
+int main(int argc, char **argv)
+{
+    CActiveSocket socket;       // Instantiate active socket object (defaults to TCP).
+    char          time[50];
+
+    memset(&time, 0, 50);
+
+    //--------------------------------------------------------------------------
+    // Initialize our socket object 
+    //--------------------------------------------------------------------------
+    socket.Initialize();
+
+    //--------------------------------------------------------------------------
+    // Create a connection to the time server so that data can be sent
+    // and received.
+    //--------------------------------------------------------------------------
+//    if (socket.Open("time-C.timefreq.bldrdoc.gov", 13))
+      if (socket.Open("127.0.0.1", 6789))
+  {
+        //----------------------------------------------------------------------
+        // Send a requtest the server requesting the current time.
+        //----------------------------------------------------------------------
+		const char* data = "Hello!";
+		int len = strlen(data);
+
+        if (socket.Send((const uint8 *)"HELLO\n", len))
+        {
+            //----------------------------------------------------------------------
+            // Receive response from the server.
+            //----------------------------------------------------------------------
+            socket.Receive(len);
+			uint8* data = socket.GetData();
+            memcpy(&time, data, len);
+            printf("%s\n", time);
+
+            //----------------------------------------------------------------------
+            // Close the connection.
+            //----------------------------------------------------------------------
+            socket.Close();
+        }
+    }
+
+
+    return 1;
+}