message: Restore definitions of static members in MklCpuAllocator.
  These were removed in which made the static member variables of
  MklCpuAllocator into inline variables, which are a C++17 feature, and not
  properly restored in which reverted the inline declarations, leading to
  an ODR violation that is apparently ignored with some compilers.
diff: @@ -19,6 +19,9 @@ limitations under the License.
  namespace tensorflow {
  +constexpr const char* MklCPUAllocator::kMaxLimitStr;
  +constexpr const size_t MklCPUAllocator::kDefaultMaxLimit;
  +
  } // namespace tensorflow
  #endif // INTEL_MKL
  