Use the import rule

[SVN r19968]

example/Jamfile

@@ -3,9 +3,7 @@
 subproject libs/regex/example ;
 
 # bring in the rules for testing
-SEARCH on testing.jam = $(BOOST_BUILD_PATH) ;
-include testing.jam ;
-include $(BOOST_ROOT)/libs/regex/base.jam ;
+import testing ../base ;
 
 rule regex-test-run ( sources + : input * )
 {