cmake OSVR_HAVE_CODECVT examples

OSVR/OSVR-Core CMakeLists.txt :311 

target_compile_definitions(osvr_codecvt INTERFACE OSVR_HAVE_CODECVT)

OSVR/OSVR-Core cmake-local/CompilerFeatures.cmake :44 

check_include_file_cxx(codecvt OSVR_HAVE_CODECVT)