package only the exact jars in lib/optional of source distribution

build.xml

@@ -1189,8 +1189,10 @@
 
     <copy todir="${src.dist.lib}">
       <fileset dir="${lib.dir}">
-        <include name="optional/junit*.jar"/>
-        <include name="optional/hamcrest*.jar"/>
+        <include name="optional/junit-3.8.2.jar"/>
+        <include name="optional/junit-4.13.1.jar"/>
+        <include name="optional/hamcrest-core-1.3.jar"/>
+        <include name="optional/hamcrest-library-1.3.jar"/>
         <include name="README"/>
         <include name="libraries.properties"/>
       </fileset>

lib/libraries.properties

@@ -44,6 +44,9 @@ commons-logging.version=1.1
 commons-logging-api.version=${commons-logging.version}
 js.version=20.1.0
 js-scriptengine.version=${js.version}
+# Note - When updating the hamcrest versions here, make sure to also update the
+# "src-dist" target in build.xml to copy the correct hamcrest jars
+# into the source distribution
 hamcrest-core.version=1.3
 hamcrest-library.version=${hamcrest-core.version}
 jai-core.version=1.1.3
@@ -55,6 +58,9 @@ jasper-compiler.version=4.1.36
 jasper-runtime.version=${jasper-compiler.version}
 jdepend.version=2.9.1
 jruby.version=1.6.8
+# Note - When updating the junit.version here, make sure to also update the
+# "src-dist" target in build.xml to copy the correct junit 4.x jar
+# into the source distribution
 junit.version=4.13.1
 rhino.version=1.7.11
 junit-platform-launcher.version=1.2.0