fix set of LIBOVR_LIBRARIES in FindLibOVR module
add NAMES to find_library commands
only add udev and xinerama on UNIX
don't apply udev and xinerama libraries to APPLE
add a missing closing bracket
tweak to help windows find oculus libraries
remove useless lib prefix in oculus find module
Revert "remove useless lib prefix in oculus find module"

This reverts commit ff1ae434742678b3ad2237978175a2fb252d93c4.
Merge pull request #3226 from birarda/oculus

fix set of LIBOVR_LIBRARIES in FindLibOVR module