Fixed CompCor to include variance normalization.
Fixed CompCor to include variance normalization.

danlurie/C-PAC,danlurie/C-PAC,roijo/C-PAC_complexitytools,roijo/C-PAC_complexitytools,roijo/C-PAC_complexitytools,danlurie/C-PAC,roijo/C-PAC_complexitytools,danlurie/C-PAC