CMake patch
The cmake patch that adjusts for GNUInstallDirs libdir not to use 64 suffix is missing a counterpart for adjusting the global variable FIND_LIBRARY_USE_LIB64_PATHS. Currently the semantics of GNUInstallDirs could be recognised by insepcting the FIND_LIBRARY_USE_LIB64_PATHS global property. The patch causes a asymmetry.