Add changes entry for setting Java thread name

CHANGES.current

@@ -7,6 +7,17 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.0.0 (in progress)
 ===========================
 
+2018-12-20: hasinoff,wsfulton
+            [Java] #1334 Set Java thread name to native thread name when using directors.
+
+            Default is to use name "Thread-XXX" and is still works like this by default. However,
+            adding the following will turn on the thread name setting (works for more recent
+            versions of Linux and MacOS):
+
+            %begin %{
+            #define SWIG_JAVA_USE_THREAD_NAME
+            %}
+
 2018-10-04: wsfulton
             [Python] #1126 Fix C default arguments with -builtin and -fastunpack and -modernargs.
             Problem occurred when there is just one (defaulted) parameter in the parameter list.