Fixed more missed opportunities to use fparse_set_pos() and

foutput_newline().
* src/server/dbck-cache.c (get_version): Use fparse_set_pos()
intead of fseek() where appropriate.
(init_cache): Ditto.
* src/server/simple-cache.c (get_version): Ditto.
(pre_sync): Removed dead code.  Use foutput_newline() and
fparse_set_pos() where appropriate.
(save_one_conf): Use foutput_newline() where appropriate.
(save_one_pers): Ditto.
(save_one_text): Ditto.
(init_cache): Use fparse_set_pos() where appropriate.