Test with warnings=extra, warnings-as-errors=on

test/Jamfile.v2

@@ -9,6 +9,15 @@
 
 import testing ;
 
+project
+  : default-build
+    <warnings>extra
+  : requirements
+    <toolset>msvc:<warnings-as-errors>on
+    <toolset>gcc:<warnings-as-errors>on
+    <toolset>clang:<warnings-as-errors>on
+  ;
+
 run function_test.cpp ;
 # /usr/include/c++/4.4/bits/shared_ptr.h:146: error: cannot use typeid with -fno-rtti
 run function_test.cpp : : : <rtti>off <toolset>gcc-4.4.7,<cxxstd>0x:<build>no : function_test_no_rtti ;