Update build deps.

example/Jamfile

@@ -11,6 +11,8 @@ import-search /boost/config/checks ;
 import config : requires ;
 import testing ;
 
+project : requirements <library>/boost/function//boost_function ;
+
 run bind1st.cpp : : : [ requires cxx98_binders ] ;
 run int_div.cpp ;
 run sum_avg.cpp ;

test/Jamfile.v2

@@ -17,6 +17,7 @@ project
     <toolset>gcc:<warnings-as-errors>on
     <toolset>clang:<warnings-as-errors>on
     <library>/boost/typeof//boost_typeof
+    <library>/boost/function//boost_function
   ;
 
 run function_test.cpp ;