NFSv4 support is now in master

[ronnie sahlberg]

All,

I have just merged the NFSv4 branch into master.
This now brings NFSv4 support for libnfs and its applications.

To enable NFSv4 (instead of NFSv3) iss done by adding the ?vers=4
argument to the url.

I.e. nfs://my-server/data/export?vers=4


There might be some parts that is not fully right yet for big endian
machines but I will take care of that shortly.
Now, with NFSv4 support it should finally be possible to implement
file locking in libnfs.



regards
ronnie sahlberg