When we made BIND 9 libraries private to BIND 9, we forgot to remove the
libdns section on "export" libraries from the ARM.
(cherry picked from commit 3637c466c9)
The ARM and the manpages have been converted into Sphinx documentation
format.
Sphinx uses reStructuredText as its markup language, and many of its
strengths come from the power and straightforwardness of
reStructuredText and its parsing and translating suite, the Docutils.
(cherry picked from commit 9fb6d11abb)