You can probably use rpm2cpio (or whatever that utility is) to extract the 6.2 glibc2.0 compatability libraries. Or you can search for it on the Internet in a tarball format. Or you can find a moldy old extra disk drive, then install and upgrade Linux from all your CDs.

The latter is what I did recently, so now I have a bunch of moldy old libc libraries. While I don't care about Tclpro, I have discovered that I can run a Neolithic web browser like Netscape Navigator 3.04 with the old libc5 libraries by using a wrapper script that exports LD_LIBRARY_PATH.

It's up to you to figure out how you want to get the old libc libraries on your machine, though. Good luck.