sync with TexLive revision 46771.

source/build-aux/config.guess

source/build-aux/config.sub

source/build-aux/texinfo.tex

source/configure

source/doc/tlbuild.info

source/doc/tlbuild.texi

source/libs/configure

source/libs/zziplib/TLpatches/ChangeLog

source/libs/zziplib/zziplib-src/zzip/__string.h

source/texk/configure

source/texk/kpathsea/ChangeLog

source/texk/kpathsea/NEWS

source/texk/kpathsea/c-auto.in

source/texk/kpathsea/cnf-to-paths.awk

source/texk/kpathsea/configure

source/texk/kpathsea/lib.h

source/texk/kpathsea/tex-make.c

source/texk/kpathsea/texmf.cnf

source/texk/kpathsea/version.ac

source/texk/texlive/configure