NFS3 lets you specify multiple shares per line

Apparently NFS3 lets you configure multiple shares per configuration line, like:

/media/storage /media/data *(ro,sync,no_subtree_check)

This patch allows the nfs3 module to parse that. However, when the new configuration is written to disk, it will be written with only one share per line, like:

/media/storage *(ro,sync,no_subtree_check)
/media/data *(ro,sync,no_subtree_check)