fixed incorrect sign of the result of the convolution with normalized asymmetric kernels (ticket #779)

fixed border processing bayer2rgb & bayer2gray; made the test "color-bayer" pass; renamed CV_Bayer*2Gray -> CV_Bayer*2GRAY for consistency

SSE2 optimization for Bayer->RGB; added Bayer->Gray with SSE2 optimization; corrected some bugs noted in the yahoogroups forum

added cvSave(contours) to the contours demo; added rational model demonstration to stereo_calib; fixed formatting in imgproc/types_c.h

moved estimateAffine3D declaration from imgproc to calib3d, where it is really implemented (ticket #705)

moved some old stuff to the legacy module; merge "compat_c.h" headers and moved to the legacy as well. moved implementation of many non-critical/obsolete inline functions and methods to .cpp to improve Opencv build time

fixed the ordering of parameters in PyArg_ParseTupleAndKeywords, added correct Ptr<CvDTreeSplit>::delete_obj() (ticket #406)

fixed canny test; fixed mhi-global test & implementation (hopefully, for the last time); added sse 4.1 & 4.2 support (not working in Xcode for some reason); moved splineInterpolation to color.cpp; fixed a few bugs in documentation

added hconcat & vconcat functions for joining matrices; moved some inline functions out of the headers; fixed several bugs in documentation; removed MatND from docs

decreased the lower canny threshold in HoughCircles, helps to detect some circles in low-contrast images (ticket #518)

fixed grabCut: moved to double precision and added the noise to avoid zero determinant of covariance matrix