[PATCH] nfs: forward filesystem options to the kernel command line

[Juergen Borleis]

This is v3 of this patch. v2 suffers from there is no real default port and
mountport number to check for. These portnumbers can be manually setup or will
be negotiated with the portmapper at the host's side. But we must honor these
special mount options only for the case where a user sets them up manually. By
using two new flags we can now be sure the portnumbers were set manually or
negotiated.

jb