Fixes for typos

Signed-off-by: enyst <engel.nyst@gmail.com>
Possible fixes for incomplete or unclear phrases

Signed-off-by: enyst <engel.nyst@gmail.com>
Strictly speaking, for proprietary relicensing 'only' unconditional permissions are needed.

Signed-off-by: enyst <engel.nyst@gmail.com>
Move details of exclusive power to a footnote.

enyst was quite correct that more explanation was needed here about how
an entity achieves exclusive relicensing rights.  However, the details
are somewhat off-point to what the section is trying to explain, so the
details are best placed in a footnote.

I've also separated out copyright assignment from generating all of
one's own copyrights.  This may be a distinction without a difference,
but a laundry list seemed appropriate here.  Perhaps this should be
shortened in future.
Formatting typo fix.
derivative works matter less than you think.

Given the wealth of text this chapter offers regarding derivative works,
this section really is necessary to give context on this point and
assure that the reader is not unduly swayed to believe that the
derivative work discussion is a central tenant of understanding
copyleft.

Long term, it may make sense to move the entire chapter on derivative
works to a different part of the tutorial.  Historically, it was placed
here because when teaching courses on the subject based on this text, I
found as an instructor that questions about derivative works became so
rampant from students during discussions of GPLv2§2 / GPLv3§5 that
derivative works discussion ahead of time was the only way to quell the
onslaught of ultimately off-topic questions.

Thus, the placement of the derivative works section in this location may
in fact be merely an historical artifact that this text was written
originally to accompany an in-course presentation.  While I'd still
recommend organizing a classroom presentation of these topics in that
order, I no longer believe the written materials must follow suit.
Wordsmith this sentence fragment a bit.
Update this situation status.

This situation is still unresolved, but it's not necessarily accurate to
say that negotiations continue per se, since the issue in question is
now widely known by the entire Free Software community and remains an
issue.  (It should be obvious to the careful and informed observer what
situation this is.)
Rework over-abundant use of term "derivative work"

The older portions of this tutorial tended to favor the term "derivative
work", since that was the popular catch-all term used at the time the
text was written.

However, as the newer text regarding GPLv3 now states, FSF abandoned the
use of the term "derivative work" in the text of GPLv3 itself, for
various reasons we already discuss in the tutorial.

Therefore, the tutorial text itself should likely not rely so heavily on
the phrase "derivative work" throughout.  This change herein reworks a
number of places where "derivative work" was used in the tutorial and
replaced it with other terms.

Ultimately, some word-smithing happened as part of the process of doing
this patch.
Investigate USA-specific-ness of "derivative work"

This FIXME is to remind me to look into this issue later.
Added TODOS directory.
Added link to todo for creating EPUBs from LaTeX.
Reaame TODOS/README.md to TODO.md

I think we should just put this in the top level directory.
Typo fix.
Add chapter on router with included source CD

Note that this chapter is not properly TeX-formatted.  Some work will
need to be done to make it compile correctly.  It should also be
generally expanded and made to flow more nicely, in the spirit of the
other case study chapters.
Expand title a bit
Rework first paragraph
Note for later work to be added on this issue
A few additional ideas on how this section could be expanded
Update build notes to be more "walk through"-style