Remove duplicate "boost" from library names. Thanks to Tiziano Mueller

for bug report and the suggested fix.


[SVN r35801]

Jamfile.v2

@@ -280,7 +280,7 @@ rule tag ( name : type ? : property-set )
         else
         {
             return [ common.format-name
-                boost_ <base> <toolset> <threading> <runtime>
+                <base> <toolset> <threading> <runtime>
                 : $(name) : $(type) : $(property-set) ] ;
         }
     }