Updated some comments

src/plugins/preview.c

@@ -46,6 +46,7 @@ typedef struct _Preview
 
 
 /* prototypes */
+/* plug-in */
 static GtkWidget * _preview_init(BrowserPlugin * plugin);
 static void _preview_destroy(BrowserPlugin * plugin);
 static void _preview_refresh(BrowserPlugin * plugin, char const * path);

src/plugins/subversion.c

@@ -12,7 +12,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>. */
-/* FIXME:
+/* TODO:
  * - parse SVN's meta-data */