Merge pull request #4630 from BlGene/load_hdf5_fix

Made load_hd5 check blob dims by default, instead of reshaping.

diff --cc src/caffe/layers/hdf5_data_layer.cpp
Simple merge

diff --cc src/caffe/test/test_hdf5data_layer.cpp
Simple merge

diff --cc src/caffe/util/hdf5.cpp
Simple merge