Log Message:
update to xwrits-2.21.

Changes since 2.19:
-------------------

Version 2.21   6.May.2002

* Add support for Xinerama. Requested by Orion Hodson <hodson@icir.org>.

Version 2.20   17.Apr.2002

* Add `title' option. Suggested, and patch provided, by Dale Thatcher
  <xwrits@dalethatcher.com>.

* Finally fix `--multiscreen' option. Thanks to Orion Hodson
  <hodson@icir.org> for lending his multihead machine.