version.
- Make sure versions set on the command line override version set in
nfsmount.conf
- Make version rollbacks still work when versions are set in nfsmount.conf
- mount.nfs: Support negotiation between v4, v3, and v2
- mount.nfs: Keep server's address in nfsmount_info
- mount.nfs: Sandbox each mount attempt
- mount.nfs: Support negotiation between v4, v3, and v2