Tclkit 8.4.15 and 8.5a6

FYI, I've built and uploaded new Tclkit binaries to the website at
	http://www.equi4.com/pub/tk/
Only Mac OS X and Linux so far, more contributions are welcome.

These were all built using genkit and the tar files in:
	http://www.equi4.com/pub/tk/tars/

A couple of changes were made to get all the builds right again, for  
both 8.4 and 8.5 variants (the latter is built when KIT_VERSION=5 is  
set in the environment).

Note that all these builds are unthreaded.

-jcw