* kawa/Telnet.java:  Merge contents of TelnetConnection.java.
	Implement Runnable instead of extending Thread.
	Make some constants (such as ECHO, DONT, etc) public.
	* kawa/TelnetConnection.java:  Removed.
	* kawa/TelnetInputStream.java:  Update accordingly.
	* kawa/TelnetOutputStream.java:  Likewise.
	* kawa/repl.java:  Likewise.
	* kawa/Makefile.am (java_JAVA):  Remove TelnetConnection.java.