disable "unwanted" messages

1. disabled OpenCL acceleration for cv::multiply() (CV_32F), cv::divide (CV_32F), cv::convertScaleAbs (CV_32F) and cv::reduce (SUM, CV_32F), cv::reduce (MIN & MAX), cv::flip (3-channel case).
2. changed the number of test loops from 1 to 30 (except for cv::pow() test, which fails for yet unknown reason)
3. disabled IPP acceleration for 3-channel norms.
4. modified relativeNorm test function to handle very small values

Conflicts:

	modules/core/src/stat.cpp

fix for cv::LUT and cv::transpose

fixed extrapolation for ocl::cornerMinEigenVal and ocl::cornerHarris; enabled CV_32FC1 for the first function

Also, added the missing include guard to perf_precomp.hpp.
This should fix the build.

change the download channels to oclchannles()
fix bugs of arithm functions
perf fix of bilateral
bug fix of split test case
add build_warps functions

fix the channel 3 bug in matrix operation
perf and buf fix for LUT haardetect convertC3C4 resize warpaffine copytom settom
add convovle
remove stereo