to be stuck at version 8.2.0b1, to http://tix.sourceforge.net/, which
offers version 8.4.3, straight-forward buildable with the recently updated
tcl.
Gone is "tixwish" as a separate program, instead use tk's "wish" +
"package require Tix" instead.
For a complete set of changes, see ChangeLog in the source. The major
changes for 8.4.0 were:
+ Complete rewrite of the build system to use TEA
+ Separation of Tix package require and Tix style usage
+ Code cleanup to use Tcl 8.4 as a base version