how to convert tensorflow .meta .data .index to .ckpt file?
These 
{
model.ckpt.data-00000-of-00001
model.ckpt.index
model.ckpt.meta
}
are the more recent checkpoint format
while 
{model.ckpt} 
is a previous checkpoint format
It will be in the same concept as to convert a Nintendo Switch to NES ... Or a 3 pieces CD bundle to a single ROM cartridge...
As we know, when using tensorflow to save checkpoint, we have 3 files, for e.g.:
model.ckpt.data-00000-of-00001
model.ckpt.index
model.ckpt.meta
I check on the faster rcnn and found that they have an evaluation.py script which helps evaluate the pre-trained model, but the script only accept .ckpt file (as they provided some pre-trained models above).
I have run some finetuning from their pre-trained model
And then I wonder if there's a way to convert all the .data-00000-of-00001, .index and .meta into one single .ckpt file to run the evaluate.py script on the checkpoint?
(I also notice that the pre-trained models they provided in the repo do have only 1 .ckpt file, how can they do that when the save-checkpoint function generates 3 files?)