Trying to save a document to a file system mounted through ncpfs from a Netware
server fails with the message "non-existent object; non-existent file".

This is due to the fact that statfs for ncpfs filesystems can't tell the amount
of available free space, f_blocks, f_bfree and f_bavail fields of the statfs
struct being always zero.

After applying the diff between version 1.51.2.9 and 1.51.2.10 to
sal/osl/unx/file.c, the save operation worked on ncpfs.

The save operation seems to also work if the NCP file system is recognized as a
remote file system. I don't know if, after change 1.51.2.9->1.51.2.10, it's
necessary to make file.c know about ncpfs, but here is a small patch to do that.

Thanks!