--- tools/build/v2/tools/common.jam.orig	Thu Oct 16 12:42:03 2008
+++ tools/build/v2/tools/common.jam	Tue Nov 11 23:43:27 2008
@@ -760,14 +760,6 @@
                 result += [ join-tag $(f:G=) : [ toolset-tag $(name) : $(type) :
                     $(property-set) ] ] ;
 
-                case <threading> :
-                result += [ join-tag $(f:G=) : [ threading-tag $(name) : $(type)
-                    : $(property-set) ] ] ;
-
-                case <runtime> :
-                result += [ join-tag $(f:G=) : [ runtime-tag $(name) : $(type) :
-                    $(property-set) ] ] ;
-
                 case <version:*> :
                 local key = [ MATCH <version:(.*)> : $(f:G) ] ;
                 local version = [ $(property-set).get <$(key)> ] ;