Fixed OS X compilation error in window_cocoa.mm

Un-commented `NSApplicationActivationPolicyRegular` argument (in leu of zero) and got rid of problematic dereference
Documentation fix on py_tutorials/py_feature2d
silence cmake 3.0+ warnings on LOCATION attribute
Add cv::setWindowTitle to highgui
Merge pull request #3432 from taka-no-me:wintitle
Merge pull request #3411 from eltermann:master
Merge pull request #3409 from fish2000:patch-1
Merge branch 'ctest-support' into ctest-dashboard-support
add valgrind suppressions file
print CTEST_FULL_OUTPUT to prevent CTest from discarding test output
add CTest scripts for dashboard submission