add the runtime classes into aspectjtools.jar. needed because of

static dependency from weaver classes to runtime classes.
Better than alternative of updating all ant scripts that fork and
the ajc compiler scripts to add aspectjrt.jar into path.

build/build.xml

@@ -372,6 +372,9 @@ To use testing client jar in tests,
     	<mkdir dir="${aj.dist.dir}/tools_tmp"/>
     	<unjar dest="${aj.dist.dir}/tools_tmp"
     		   src="${aj.dist.dir}/tools/lib/aspectjtools.jar"/>
+    	<!-- put the runtime classes in too -->
+    	<unjar dest="${aj.dist.dir}/tools_tmp" 
+    		src="${aj.dist.dir}/tools/lib/aspectjrt.jar"/>
     	<!-- Ant 1.5.1 doesn't overwrite the jar, even with update set to false -->
     	<delete file="${aj.dist.dir}/tools/lib/aspectjtools.jar" />
 		<jar manifest="${aj.dist.dir}/tools_tmp/META-INF/MANIFEST.MF"