Isn't HANDLE 64 bits on Win64?

... and if so, isn't postmaster.c's code to transfer a HANDLE value to a
child process all wet?
sprintf(paramHandleStr, "%lu", (DWORD) paramHandle);
...
paramHandle = (HANDLE) atol(id);


BTW, it seems like it'd be a good thing if we had a Win64 machine in the
buildfarm.
        regards, tom lane