add lcdvc client: virtal console on LCD

clients/lcdvc/lcd_link.h

@@ -0,0 +1,13 @@
+#ifndef LCD_LINK_H
+#define LCD_LINK_H
+
+extern char * address;
+extern int port;
+
+int connect_and_setup();
+int read_response( char * str, int maxsize );
+int process_response( char * str );
+int update_display();
+int send_nop();
+
+#endif