from my svn 855

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

add OCL 1.2 feature for setTo
bug fix of integral
replace the error code -217 with suitable MACRO
simplify tests, no need apply a new context for each test case
add more control for tests in utility.hpp

add channel 3 support
add fast way Between CPU and GPU for the data which is aligned