In 0.9, fix history notes on early TUF (clone's Justin's edits)

Apply the edits made on notes about the early history of TUF in
the 1.0 spec to the 0.9 version of the specification as well.

Signed-off-by: Sebastien Awwad <[email protected]>

Author: awwad

tuf-spec.0.9.txt

@@ -39,17 +39,16 @@ Version 0.9
    (http://www.geni.net/)
    (http://www.nsf.gov/)
 
-   TUF's reference implementation is based heavily on Thandy, the application
-   updater for Tor (http://www.torproject.org/). Its design and this spec are
-   also largely based on Thandy's, with many parts being directly borrowed
-   from Thandy. The Thandy spec can be found here:
+   TUF's reference implementation is based on prior work on Thandy, the application
+   updater for Tor (http://www.torproject.org/). TUF's design and this spec
+   also came from ideas jointly developed in discussion with Thandy's authors.
+   The Thandy spec can be found here:
    https://gitweb.torproject.org/thandy.git?a=blob_plain;f=specs/thandy-spec.txt;hb=HEAD
 
    Whereas Thandy is an application updater for an individual software project,
    TUF aims to provide a way to secure any software update system. We're very
-   grateful to the Tor Project and the Thandy developers as it is doubtful our
-   design and implementation would have been anywhere near as good without
-   being able to use their great work as a starting point. Thandy is the hard
+   grateful to the Tor Project and the Thandy developers for the early discussion
+   that led to the ideas in Thandy and TUF. Thandy is the hard
    work of Nick Mathewson, Sebastian Hahn, Roger Dingledine, Martin Peck, and
    others.