Unify int types handling in protocol files
    
    Some of the protocol files already include handing of the missing int
    types such as xdr_uint64_t, some don't. To fix it everywhere, move out
    of the appropriate defines to the utils/virxdrdefs.h file and include
    it where needed.
    
    Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>