Compatibility fix for 'ln -sf'.
ln of Solaris 8 only accepts "ln -f -s" (in that order), but as the -f isn't
needed here, I simply dropped it.
--- a/tests/test-symlinks
+++ b/tests/test-symlinks
@@ -35,7 +35,7 @@ rm a.c
rm dir/a.o
rm dir/b.o
mkdir dir/a.o
-ln -sf nonexist dir/b.o
+ln -s nonexist dir/b.o
mkfifo a.c
# it should show a.c, dir/a.o and dir/b.o deleted
hg status