fix linker arguments order
fix linker arguments order

Ignore-this: db45704bfd003aa4c517f13014ffcea0

darcs-hash:20111228130907-c41ad-28d50983fddf9f12b68d7ba6ac28b657b46de67d

ocsigen/lwt,janestreet/lwt-async,rneswold/lwt,mirage/lwt,rgrinberg/lwt,ocsigen/lwt,ocsigen/lwt,mirage/lwt,rneswold/lwt,gfxmonk/lwt,c-cube/lwt,c-cube/lwt,janestreet/lwt-async,fdopen/lwt,c-cube/lwt,fdopen/lwt,rgrinberg/lwt,rgrinberg/lwt,rneswold/lwt,gfxmonk/lwt,mfp/lwt,mfp/lwt,rgrinberg/lwt