be more smart about ocaml version

mldonkey/mldonkey.spec

@@ -34,7 +34,7 @@ Class:        EVAL
 Group:        Network
 License:      MLdonkey/GPL
 Version:      2.5.21
-Release:      20040521
+Release:      20040605
 
 #   package options
 %option       with_gui  yes
@@ -92,6 +92,7 @@ AutoReqProv:  no
         --prefix=%{l_prefix} \
         --enable-batch \
         --enable-multinet \
+        --enable-ocamlver=3 \
 %if "%{with_gui}" == "yes"
         --enable-gui
 %else