Log Message:
Updated to version 0.9.13.

Changes:

- Fixed EOF handling in SILC Config.

- Do not send full INVITE and BAN lists in INVITE and BAN
  notifys, only the changed information.

- Fixed INVITE notify sending in INVITE command, send it
  only when needed.

- Handle the founder key change properly in CMODE_CHANGE
  notify.  Bug #122.

- Remove the mark for output (mark it only for input) after
  purging outgoing queue.  Prevents the "Error in select()"
  floods.

- Check server private key file permissions before starting
  the server.

- NULL terminate allocated string in silc_buffer_strformat.

- Rewrote the invite/ban list string handling in server to
  use SilcBuffer instead.

- Fixed double free in CMODE command when setting new HMAC
  for channel.

- Added couple of missing memset's to zero sensitive memory.