Not only is this the most badass post on the forums right now, dude you need to submit this to UESP. That's awesome. It would be better if you had a catalog of where each one was, and what the shout was that it went into.
Fantastic job though.
The shout you get from every wall is in bold. With the info found on UESP, it would be easy to locate the wall in game.
Yep, I was translating them but gave up when I found that out. :/
I didn't get this from the strategy guide. I don't have one. I wrote the the walls down during my playthroughs (in draconic) and used the uesp.net dictionary to translate. If I had perfect translations, they wouldn't be so rough at times.

These two are interesting. Any clue where they might be found in-game?
The first one, Tah, should be found outside Ysgramor's Tomb.
The second one, Nir, at Volunruud.
However, I played several characters now, and I don't think the words are fixed to a specific location. Instead, there are three fixed locations for every shout (e.g. Northwind Summit, Valthume and Volunruud for Aura Whisper), and the one you visit first has the first word, the second one the second, and the third one the third. This makes the whole "here lies" deal a bit pointless, but oh well. :sadvaultboy:
Here's a transcription:...
---------------------
Alduin: Sahloknir! Ziil gro dovah ulse!
Alduin: Slen Tiid Vo!
Sahloknir: Alduin, thuri! Boaan tiid vokriiha suleyksejun kruziik?
Alduin: Geh, Sahloknir, kaali mir.
Alduin: Ful, losei Dovakiin? Zu'u koraav nid nol dov do hi.
Alduin: You do not even know our tongue, do you? Such arrogance, to dare take for yourself the name of Dovah.
Alduin: Sahloknir, krii daar joorre.
Sahloknir: Fo....
-------------------
I'll leave translation to someone with a better grasp of the vocabulary.
Alduin: Sahloknir (Phantom Sky Hunt)! Ziil gro dragons ulse!
Alduin: Flesh Time Opposite! (I assume this is the shout to ressurect Sahloknir?)
Sahloknir: Alduin, overlord! Boaan time did not kill the ancient king of power? (a lot of interpretation here)
Alduin: Yes, Sahloknir, champion allegiance. (my loyal champion, perhaps?)
Alduin: So, is (this) Dovahkiin? I koraav no from dragon of hi.
...
Alduin: Sahloknir, kill that mortal.
The only part I'm sure about is the last line. Really a lot of words missing, or Alduin has a heavy accent.

Know what the backside of the dragonstone says?
Sadly, not really. I can't come up with anything better than uesp.net
HET NOK UN
MahLaan DROGGE
ERei SULeyK SE
ALDUIN VOKRii
Here lies UN
MahLaaN Lords
ERei Power of
Alduin VOKRii