Fix typo in error message

[SVN r52373]

Jamroot

@@ -159,7 +159,7 @@ rule handle-static-runtime ( properties * )
     if <link>shared in $(properties) && <runtime-link>static in $(properties) &&
         ! ( <toolset>cw in $(properties) )
     {
-        ECHO "error: link=static together with runtime=link is not allowed" ;
+        ECHO "error: link=shared together with runtime-link=static is not allowed" ;
         ECHO "error: such property combination is either impossible " ;
         ECHO "error: or too dangerious to be of any use" ;
         EXIT ;