[text] Copyright notices

From: Phil Endecott (spam_from_boost_dev_at_[hidden])
Date: 2020-06-15 16:19:58

Dear All,

Looking at the proposed Boost.Text source, I find that:

1. Many files don't have a copyright header.  Random example:
https://github.com/tzlaine/text/blob/master/include/boost/text/unencoded_rope.hpp
I guess this is an oversight and is easily fixed.

2. Some files have a copyright header which is not the Boost
licence.  Example:
https://github.com/tzlaine/text/blob/master/include/boost/text/transcode_algorithm.hpp

This one has a requirement that binary distribution includes the
copyright notice, which is not a requirement of the Boost licence,
and will be problematic for some users.

Are the only affected files the SIMD implementation, (c) Robert N
Steagall?  If so, can this be disabled (by default?) by the user
to avoid the copyright notice requirement?

3. The documentation includes a Unicode copyright notice:
https://tzlaine.github.io/text/doc/html/boost_text__proposed_/unicode_copyright_notice.html
This also includes a requirement that the copyright notice is included
in data files, software or associated documentation, whatever that means.
It's not clear to me what this actually covers; again, can some
functionality (e.g. UTF-N-to-M conversion without normalisation) work
without the Unicode data?

Regards, Phil.