Enable the debug library suffix, which is extremely necessary on Windows. If users want to debug their own programs in Visual Studio, but linking the programs to the release version libraries of Open MPI, i.e. mixing debug and release version DLLs, that will definitely cause some errors. What we have to do is providing both debug and release versions libraries, distinguished with suffix 'd', e.g. libmpid.dll for debug version.
This commit was SVN r20828.
