Add the idea of holistic features
Add the idea of holistic features

Seperate features into patch and holistic. Holisitic gets
computed on the whole image, before scaling. patch_features
get computed inside each patch - and are equivalent to the old
features.

grigorisg9gr/menpofit,yuxiang-zhou/menpofit,grigorisg9gr/menpofit,yuxiang-zhou/menpofit