add LRN within map layer and dependencies (eltwise product and power)
add unit tests for new layer types
use average pool instead of conv
add padding for average pooling
bug fix: average pooling already divides by N^2
use split layer in LRNMapLayer
use bvlc copyright
add cifar example using LRN_MAP (just like the cuda-convnet layers-18pct
architecture) instead of LRN
fix some param bugs
merge LRNMapLayer into LRNLayer with norm_region proto field