Update to 6.4
- Strip shared library
Changes: https://savannah.gnu.org/forum/forum.php?forum_id=8893
https://svn.savannah.gnu.org/viewvc/texinfo/trunk/util/texi2dvi https://svn.savannah.gnu.org/viewvc/texinfo/trunk/doc/texinfo.tex
PR: 220304
Exp-run by: antoine