Identified and removed some memory leaks associated with the Encodings RRE, CoRRE, ZLIB, and Ultra.

KeyboardLedState now has portable masks defined.
rfb >= 3.7 Security Type Handler list would grow 1 entry for each new client connection.

ChangeLog

+2006-05-29  Steven Carr <scarr@jsa-usa.com>
+	* Identified and removed some memory leaks associated
+	  with the Encodings RRE, CoRRE, ZLIB, and Ultra.
+	* KeyboardLedState now has portable masks defined.
+	* rfb >= 3.7 Security Type Handler list would grow 1
+	  entry for each new client connection.
+ 
 2006-05-16  Steven Carr <scarr@jsa-usa.com>
 	* Statistics output now fits in 80-column output
 	* Corrected Cursor Statistics reporting as messages