This patch update bioinspired opencl code to make it working
with latest opencv, major changes include:

1. data structure update, e.g. oclMat to UMat.
2. opencl kernel optimization to get it running faster
3. accuracy and perf test update.
Signed-off-by: Li Peng <peng.li@intel.com>

Bioinspired module: remove printSetup to avoid unnecessary printing in the console, fix some typos. (#905)

added a local extremum blob detector that can be used after retina module to detect transient areas (low level saliency)