Itseez/opencv — pull request #1900 by berak (2013-11-30 15:46:41+00:00)
Title: Scalar::all() in MatOp_Initializer::assign and setIdentity()

fix for [issue 3227](http://code.opencv.org/issues/3227)

took the liberty to change setIdentity() in core.hpp as well, also some tests in tests/mat.cpp