Supress 'link-compatibility' warning for:

stage a1 : a1.txt : <location>dist ;
  stage a2 : a2.txt : <location>dist <dependency>a1 ;

The problem is that 'a1' is requested with <os>LINUX but the returned target
have <location>dist as the only property, which causes this bogus warning.


[SVN r26421]

v2/tools/stage.jam

@@ -244,6 +244,10 @@ class stage-target-class : basic-target
         
         return $(found) ;
     }
+            
+    rule check-for-link-compatibility ( * : * )
+    {
+    }
 }
 
 # Create a target named 'name' in the current project