Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

This commit was generated by cvs2svn to compensate for changes in r146515,
which included commits to RCS files with non-trunk default branches.

Import of stripped down GNU texinfo 4.8

Import of stripped down GNU texinfo 4.6

Import of stripped down GNU texinfo 4.5

Import of stripped down GNU texinfo 4.2

Import of stripped down GNU texinfo 4.1