Deorbit support for nVidia driver legacy versions, part 3:
- libnvidia-cfg.so* files are always installed since version 81.074
- Au contraire, libnvidia-wfb.so.1 is not (since version 195.022)
- Remove now useless checks for NVVERSIONs before 180.029 and 185.01829 (always false) and after 304.128 (always true)
- Unconditionally rename libGLcore -> libnvidia-glcore in pkg-plist (been that way since version 256.053)