https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1474304

(cherry picked from commit b027eac1)

(cherry picked from commit e11333dd)

This fixes all problems from the article "Checking OpenCV with PVS-Studio"
<http://www.viva64.com/en/b/0191/> that are not already fixed and are
not in 3rdparty or the legacy module.

The problems fixed are two instances of useless code and one instance
of unspecified behavior (right-shifting a negative number).

Consistent with the test made in cv::boxFilter, it adjusts the kernel size to the source size only if the border is not BORDER_CONSTANT and if BORDER_ISOLATED is set. Otherwise, the source has to be considered possibly in a larger image (i.e. the source being a ROI) in witch the kernel should apply.

(cherry picked from commit b036fc75)

Cleaned up adaptive bilateral filtering, added support for gaussian interpolation, updated sample and docs

added IPP optimization of separable 32f filters; fixed IPP version check in DFT; fixed conditions in IPP optimization of norm functions.