define gradient at zero to be zero
Merge pull request #1326 from jackculpepper/absgradatzero

[fix] define gradient at zero to be zero to fix ABSVAL NaN
Update data_transformer.hpp

Minor grammar fix in comments.
groom ignore

- re-group general and Caffe ignores
- ignore OS X files and Eclipse .settings as suggested by @cypof
make release, debug build dirs configurable in Makefile
Minor whitespace fix in logging message in HDF5 output layer
Merge pull request #1344 from baeuml/minor-whitespace-in-logging-message-fix

Minor whitespace fix in logging message in HDF5 output layer
Prevent Matlab on OS X from crashing on error

Replace CHECK() and LOG(FATAL) with LOG(ERROR) and mexErrMsgTxt

A failed CHECK() or LOG(FATAL) causes Matlab to crash on OS X 10.9 with Matlab 2014a.
clean incorrect relu test code
relax benchmark milliseconds threshold
Merge pull request #1417 from Yangqing/dev

clean incorrect relu test code
fix relu cudnn test bug
Merge pull request #1432 from Yangqing/dev

fix relu cudnn test bug
fixed tanh to not return NaN for input values outside the range [-40, 40]
Fixed header order to satisfy linter
in SoftmaxLossLayer, check label >= 0 in addition to upper bound
use DCHECK in SoftmaxLossLayer so that bounds checking has no perf penalty without DEBUG
Merge pull request #1469 from longjon/label-lower-bound

Check both lower and upper bounds in SoftmaxLossLayer
Merge pull request #1455 from seanbell/tanh-fix

Fix tanh layer for badly scaled input values
remove redundant code in ConvolutionLayer::Reshape