libd1394 2.x support for mingw on windows added
libd1394 2.x support for mingw on windows added
Merge branch 'mingw-libdc1394-2-windows' of https://github.com/dominikrose/opencv into mingw-libdc1394-2-windows
Merge branch 'mingw-libdc1394-2-windows' of https://github.com/dominikrose/opencv into mingw-libdc1394-2-windows
Merge branch 'mingw-libdc1394-2-windows' of https://github.com/dominikrose/opencv into mingw-libdc1394-2-windows
Merge branch 'mingw-libdc1394-2-windows' of https://github.com/dominikrose/opencv into mingw-libdc1394-2-windows
Merge branch 'mingw-libdc1394-2-windows' of https://github.com/dominikrose/opencv into mingw-libdc1394-2-windows
libdc1394 - removed validation for msvc compiler in CMakeLists.txt
Fix pixel value rendering for non-fixed-size QT windows
Fix image saving from QT toolbar
Add a new global function to control ocl binary storage

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.
Use anonymous enumerations instead of constants
fix for Bug #3085:

weights array is only allocated for (l_count+1) elements,
but then weights[l_count+1] element is accessed.
fix for bug #2985: 

OPENCLAMDBLAS and OPENCLAMDFFT never detected under linux.
lib64/import and lib32/import is the path on Windows but not Linux.
for CLAMDBLAS library we should use CLAMDBLAS_PATH (not CLAMDFFT_PATH)
link with nvcuvenc and ffmpeg libraries only if WITH_NVCUVID is enabled
add multiruns to fix "unreliable results" error
Fixed a bug #2892
Fixed a bug #2405
Fix a bug caused by NDEBUG macro; it is now removed.
Revise some descriptions of the enums.
fix for bug #3068 (PCA::computeVar for double input):

The matrix g  can have CV_32F or CV_64F type,  but g.at uses only float template.
This fix adds specialization for double type.