problem building rpcrt4 on Mingw

[Steven Edwards]

when building the current sources under mingw- gcc-3.2 I am getting this:

rpc_binding.c:869: conflicting types for `I_RpcBindingSetAsync'
../../include/rpcdcep.h:135: previous declaration of `I_RpcBindingSetAsync'

I dont really have much time to look at it now but if its a mingw only 
problem I can look at it tonight.

Thanks
Steven