Merge pull request #4348 from Canpio/fix_lod_tensor_dim_64

Change LoDTensorDesc::dims from int32 to int64

paddle/framework/framework.proto

@@ -106,7 +106,7 @@ enum DataType {
 
 message LoDTensorDesc {
   required DataType data_type = 1;
-  repeated int32 dims = 2; // [UNK, 640, 480] is saved as [-1, 640, 480]
+  repeated int64 dims = 2; // [UNK, 640, 480] is saved as [-1, 640, 480]
   optional int32 lod_level = 3 [ default = 0 ];
 }