Added MOG and MOG2.
Resolved a compiling error under Linux.
Resolved a compiling warning under Windows.
Resolved compiling errors under Linux.
Used perf_precomp.hpp instead of precomp.hpp for test.
Merge pull request #4 from Itseez/2.4

OpenCV changes
Fix bilateralFilter function
Optimized mog and mog2, which have much better performance.
add adaptive bilateral filter (cpp and ocl version)
fix warnings
Removed the trailing whitespace
Removed trailing whitespace
Removed whitespace.
Added perf namespace.
Removed performance test.
changed int -> size_t when accessing std::vector
Let clAmdBlas library initialize once during program lifetime.
Bugfix 3115: Added not to documentation for python version for
facerecognizer interface + white + whitespaces remove
Merge pull request #1300 from kdrobnyh:FilterBilateral
Add IPP support in resize, warpAffine, warpPerspective functions