Initialization with Manager instead static link added.
Tegra4 support added.
moved utility functions from gpu_perf_test and gpu_test to ts module
moved SURF_GPU and VIBE to gpunonfree module
fixed warnings
Merge pull request #652 from Daniil-Osokin:fixCvtColorHeader
Merge pull request #663 from asmorkalov:manager_tegra4
merged gpunonfree and nonfree module
Code refactoring was done.
dramatic speedup of SVM::predict in the case of linear SVM
added load/save feature for SVM classifier in letter_recog sample
Multiple Windows RT fixes

TIFF build was fixed;
Direct Show back-end was enabled;
More accurate guards implemented.
added test for bug #1448 and hopefully fixes the bug #2898
More accurate guards for WinRT features in CMake.
Merge pull request #656 from jet47:gpu-nonfree
Merge pull request #669 from vpisarev:fast_lin_svm
fixed gpu::LUT on multi device system
increased time limits in perf tests
increased epsilon in sanity test
disable tests that requires video support if it is not available