Changed "blas" to "openblas"

The change was made because openblas has to be linked as "-lopenblas" and not "-lblas". This caused an error when compiling.
Fixed param order of cv::Size in cv::resize
Merge pull request #1152 from sguada/fix_cv_size_order

Fix param order of cv::Size in cv::resize
Merge pull request #1147 from savy-91/patch-1

Changed "blas" to "openblas"
add gradient accumulation for allowing bigger batch size
tweak test case to expose bug.
update HDF5 layer test data.
fix hdf5 data layer bug
Merge pull request #1166 from pluskid/master

bugfix: HDF5 layer reshape bug
[fix] solver indexing of output blobs was incorrect for non-singleton
outputs
Merge pull request #1203 from jeffdonahue/fix-output-blob-indexing

[fix] solver indexing of output blobs was incorrect for non-singleton outputs
Update detect.py

This generator causes an error in detect_windows because it is run twice there.
Better store it as a data structure instead.
Merge pull request #1198 from dbbert/patch-1
Merge remote-tracking branch 'upstream/master'
fixed bug: accumulate diffs