tix-8.4.3-1.39

- Fix build with Tcl 8.6.0.
- Cleanup spec file.

- tcl's license is BSD-3-Clause

- add autoconf as buildrequire to avoid implicit dependency

- New version 8.4.3, works with Tcl/Tk 8.5.

- New version: 8.4.0
- Lots of cleanup and bugs fixed.
- Better per-default compliance with rpmlint.
- The 'tixwish' executable is gone.  Use tclsh or wish and load the
  Tix package dynamically.

- converted neededforbuild to BuildRequires

- Moved script library to /usr/share/tcl .

- Building as a shared lib again.
- Added -fno-strict-aliasing to CFLAGS.

- New version: 8.1.4

- build as user