core/utility.hpp missing in flann/timer.h
updated decomposeEssentialMat doc
grammar fix
Added optional constraints to non-probablistic hough lines functions
disable performance test for gpu generalized hough
Highgui test output fixes.

Useless output to console fixed;
Test output files moved from cwd to temp folder.
Reports path fix for opencv_run_all_tests.sh.in script.
gpu test output files moved from cwd to temp folder
Merge pull request #2238 from asmorkalov:ocv_test_package_reports
Merge pull request #2240 from jet47:gpu-generalized-hough
Merge pull request #2241 from asmorkalov:ocv_highgui_test_output_fix
disable some gpu tests if library was built without CUFFT
disable NPP for GpuMat methods and for copyMakeBorder
disable gpu Canny and HoughCircles perf tests:

it fails because driver terminates CUDA kernels after time out
disable gpu Subtract_Array test:

possible bug in CPU version
disable gpu CvtColor.*2HSV tests:

possible bug in CPU version
Merge pull request #2242 from jet47:gpu-test-fix
Merge pull request #2247 from jet47:gpu-test-cufft
Merge pull request #2248 from jet47:gpu-npp-disable
Merge pull request #2249 from jet47:gpu-tests-disable