make sure data is on disk, don't get empty files on ext4/ext3=writeback.

Ok, raster said it would not happen but just crashed my machine and
e.cfg was lost due ext4 being in writeback by default. Accordingly to
Theodore Ts'o
(http://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/) we
should fsync even on open-write-close+rename case.



SVN revision: 39536

legacy/eet/src/lib/eet_lib.c

@@ -557,6 +557,7 @@ eet_flush2(Eet_File *ef)
 
    /* flush all write to the file. */
    fflush(ef->fp);
+   fsync(fileno(ef->fp));
 
    /* append signature if required */
    if (ef->key)