message: Default MFEM_SIMD_SIZE and MFEM_TEMPLATE_BLOCK_SIZE for _WIN32
diff: // --- SIMD Traits
  #ifndef MFEM_USE_SIMD
  +#ifdef _WIN32 // 64
  +#define MFEM_SIMD_SIZE 8
  +#define MFEM_TEMPLATE_BLOCK_SIZE 1
  +#else
  #define MFEM_SIMD_SIZE 32
  #define MFEM_TEMPLATE_BLOCK_SIZE 4
  +#endif
  #else
  #ifdef __VSX__ // 128
  #define MFEM_SIMD_SIZE 16
  @@ -83,9 +88,9 @@ struct AutoImplTraits
  static const int batch_size = 1;
  - static const int simd_size = 1;//simd?(MFEM_SIMD_SIZE/sizeof(complex_t)):1;
  + static const int simd_size = simd?(MFEM_SIMD_SIZE/sizeof(complex_t)):1;
  - static const int valign_size = 1;//simd?simd_size:1;
  + static const int valign_size = simd?simd_size:1;
  typedef AutoSIMD<complex_t,simd_size,valign_size> vcomplex_t;
  typedef AutoSIMD< real_t,simd_size,valign_size> vreal_t;
  