Ticket History #7407: Import remaining content from texinfo to reST

Document DejaGnu dependency and manual tests

The Texinfo install guide had a separate subsection about the DejaGnu
tests which did not get converted to the RST source.

In the testing section, also link to the wiki page on manual testing.

https://github.com/krb5/krb5/commit/fd136728de5b603974e3ec21bc5856406c4e814d
Author: Ben Kaduk <kaduk@mit.edu>
Commit: fd136728de5b603974e3ec21bc5856406c4e814d
Branch: master
doc/rst_source/krb_build/doing_build.rst | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)

Document TXT records for realm lookup

Even though they are subject to vulnerabilities via DNS spoofing
and we accordingly don't recommend their use, we do have the code
to use them. Just as we document dns_lookup_realm in krb5.conf(5),
document them here.

https://github.com/krb5/krb5/commit/89465b37e226f75e5685aae1d3848f8c467f9d02
Author: Ben Kaduk <kaduk@mit.edu>
Commit: 89465b37e226f75e5685aae1d3848f8c467f9d02
Branch: master
doc/rst_source/krb_admins/realm_config.rst | 23 ++++++++++++++++++++++-
1 files changed, 22 insertions(+), 1 deletions(-)

Make rules for building NOTICE from RST

Sphinx-build wants to scan over all the sources in the source dir,
and its text output engine does not handle the spanning row cells
used in some of our fancy tables, so it will crash if we attempt
to generate text output from our full suite of documents.
We could work around this by attempting to just compile the one
source file as an additional argument to sphinx-build, but this
seems to insist on producing an index.txt as well as a notice.txt.
Furthermore, we cannot use the same conf.py as in rst_composite because
the paths substitutions are not available with just the minimal
contents of rst_notice. Make a copy and remove the irrelevant parts,
for now, changing only the master_doc field as appropriate.

For the HTML build, we use the standard |copy| macro from isonum.txt
to get the unicode copyright symbol glyph, but for ASCII output we
prefer to just use the literal "(C)".

https://github.com/krb5/krb5/commit/e9dc672b8b3af28fa8ea71e866a7c376b4c443d7
Author: Ben Kaduk <kaduk@mit.edu>
Commit: e9dc672b8b3af28fa8ea71e866a7c376b4c443d7
Branch: master
doc/rst_source/txt_conf.py | 88 ++++++++++++++++++++++++++++++++++++++++++++
src/doc/Makefile.in | 25 ++++++++++--
2 files changed, 108 insertions(+), 5 deletions(-)