Merge branch 'tfrecord-support' into 'master'

bob/learn/__init__.py

bob/learn/tensorflow/datashuffler/Base.py

bob/learn/tensorflow/datashuffler/SiameseDisk.py

bob/learn/tensorflow/datashuffler/SiameseMemory.py

bob/learn/tensorflow/datashuffler/TFRecord.py

bob/learn/tensorflow/datashuffler/TripletDisk.py

bob/learn/tensorflow/datashuffler/TripletMemory.py

bob/learn/tensorflow/datashuffler/__init__.py

bob/learn/tensorflow/layers/Maxout.py

bob/learn/tensorflow/layers/__init__.py

bob/learn/tensorflow/loss/BaseLoss.py

bob/learn/tensorflow/loss/__init__.py

bob/learn/tensorflow/network/__init__.py

bob/learn/tensorflow/script/compute_statistics.py

bob/learn/tensorflow/test/test_cnn.py

bob/learn/tensorflow/test/test_cnn_prefetch.py

bob/learn/tensorflow/test/test_cnn_pretrained_model.py

bob/learn/tensorflow/test/test_cnn_scratch.py

bob/learn/tensorflow/test/test_dnn.py

bob/learn/tensorflow/test/test_inception.py