bug#34894: Another solaris 10 ln issue on 8.31

[John Marino]

After applying the recent patch to 8.31 ln to fix functionality on 
solaris 10, I saw some improvement but I think there's something else wrong.

e.g. # ln -s /raven/etc/fonts/conf.avail/50-user.conf .
ln: failed to create symbolic link '.': Invalid argument
I'm sure commands like that worked with version 8.30.

Regards,
John