tclkit updates

FYI, I've added some new tclkit builds for 8.4.18 and 8.5.1 to www.equi4.com

The tclkit download matrix has been updated:
	http://www.equi4.com/pub/tk/downloads.html

A much simpler overview of the latest builds for the main platforms is  
at:
	http://www.equi4.com/tclkit/download.html
This updated page is part of the new Tcl-driven website design.

Two changes w.r.t. the Mac OS X builds:
  - the latest x86 (and universal) builds should now work on 10.4 again
  - I've signed the binaries to get past the Leopard firewall issue, as
    mentioned by Steve L & Mark R recently
(if you have the setup to test this, could you post your findings here?)

All builds are based on the /pub/tk/tars/ area, which has not changed.

Enjoy,
-jcw