The tcsh with RedHat 6.1 is 6.08. The current version of tcsh is 6.09. tcsh 6.09 was released on August 16, 1999. Among other things, it fixes a minor bug annoying y2k bug involoving incorrect years being printed in the prompt in 2000 and later. (2000 through 2009 print as 10, 2010 through 2019 print as 11, etc.)
For what it's worth, the tcsh 6.09 distribution's README file says it is 6.08. If you package this, you may want to include a patch so that /usr/doc/tcsh-6.09.00 doesn't contain confusing files that will generate false bug reports....
bug id 6000 is related to this. a new version beyond 6.09 fixes a globbing bug outside of the C locale.
*** This bug has been marked as a duplicate of 6000 ***