Previously the feature is controlled by setBinpath implicitly.
We add the function to cope with setBinpath and setBinpath is only
useful when setBinaryDiskCache is set.
Refer to the header to see more info.

Also, removing explicit include path configuration,
since QT_USE_FILE takes care of that.

The bug is a buffer overrun when border type is reflect101.
It is found that gfft crashed with input of size 100x100 on Intel CPU.

We don't really need it, it makes the code longer, and it can lead to
inconsistent paths when OpenCV is itself inside a symlink.

changed line281 -> line220
Presentation:
because line 220 give the globle var mDetectorType,and in line 230 it will be compared with mDeteorType !!!  it will never be unequal ~
fix:
change mDetectorType(previous globle var) to a new local val tmpDetectorType

+ interpolateFrames and createOpticalFlowNeedleMap

the output of BroxOpticalFlow differs a bit in CUDA 5.5

old version isn't compiled with CUDA 5.5
new version doesn't depend on functional.hpp

links with CUDA driver library only if we use video encoding/decoding

When user provided corners buffer is big enough to be copied to from
tmpCorners_, we allow the buffer to be reused other than allocate a new
cl_mem object.