Use shuffled LibriSpeech cuts instead

[JinZr]

No description provided.

[JinZr]

Sys. ID	test-clean	test-other	comment
1. Baseline System	2.27	5.10	--epoch 30 --avg 9
2. Baseline System	2.23	4.96	--epoch 40 --avg 16
3. Shuffled Cuts.	2.25	5.15	--epoch 30 --avg 10
4. Shuffled Cuts.	2.24	5.02	--epoch 40 --avg 17

All systems were decoded using greedy search with the default decoding configuration.

[danpovey]

OK.
I'd rather leave the old code in comments though, in case anyone is using an older setup, and to make them aware of the possibility of doing this kind of thing.

[JinZr]

noted, the latest commit should do that