fix for compiling 2.4 opencv with xcode 5.1
Fixed bug in IPPMorphOp function when looping over elements of the morphology kernel.
Updated documentation: library names

updated the library names to OpenCV version 2.4.9
Merge pull request #2696 from PhilLab:2.4
Merge pull request #2636 from atrebbi:#3653
Merge pull request #2693 from mvukad:bugfix_ippmorphop
fix cv::subtract function:

call dst.create(...) before using it
Merge pull request #2703 from jet47:subtract-create-dst-mat
fix output matrix allocation in cv::subtract
fixed wrong download link in tutorial
finally fix cv::subtract
fixed IPP related warnings
Merge pull request #2712 from jet47:subtract-fix-3rd-attempt
Merge pull request #2708 from StevenPuttemans:2.4
Merge pull request #2706 from ilya-lavrenov:ipp_2.4_warnings
Merge remote-tracking branch 'origin/2.4' into merge-2.4

Conflicts:
	modules/core/include/opencv2/core/internal.hpp
	modules/core/src/arithm.cpp
	modules/imgproc/src/imgwarp.cpp
	modules/objdetect/src/hog.cpp
Merge pull request #2725 from SpecLad:merge-2.4