Add support to bool type

Add the bool support to the get function
Added get and set for extra PVAPI property: CV_CAP_PROP_FRAMESTARTTRIGGERMODE
Added PVAPI enums to highgui.hpp
Added "PVAPI_" prefix to FrameStartTriggerMode definition
Added missing comma in enum.
fix tiled read for reading tiles into partial blocks in image
eliminate crash in ipp-accelerated norm and mean functions (thanks to Matt Curfman and Aaron Kunze for the patch)
Update py_image_display.rst
Update py_image_display.rst

OS information removed.
core/umat: usage flags (with proposals from PR #2195)
ocl: added SVM perf test
fixed two warnings in gpu sources (-Wshadow, -Wno-sign-promo)
added [s|l]rgb <-> lab conversion
core/ocl: change error processing for missed function
fixed doc/tutorials/imgproc/histograms/template_matching/template_matching.rst
cleaned-up UMat tests
restored lost in PR #1735 umat tests
disabled 'reshape', 'copyTo' test
Update hough_circles.cpp
extended performance tests to test 3 channels
extended performance test