Version Control With Subversion Source

* en/book/ch09-reference.xml
Note that --keep-local is a local operational behavior only and
doesn't prevent the deletion of the matching working items from
other working copies.

Suggested by: danielsh

* en/book/ch09-reference.xml
Add missing --full-paths command-line option to example designed to
demonstrate it.

Found by: danielsh

* en/stylesheets/custom-html-stylesheet.xsl
Fix version number in customer footer.

Suggested by: danielsh

* en/book/ch03-advanced-topics.xml
s/server-per-server/server-by-server/

Patch by: Richard Cavell <richardcavell@...>

Branch the tools directory, too (which should fix the broken 1.7 build).

* www/index.en.html
More wording/markup edits, accidentally omitted from the previous
commit.

* www/styles.css
(.underline): New class.

* www/old-versions.html
Rework this just a bit for clarity, and move the 1.6 stuff here.

* www/index.en.html
Move 1.6 stuff to old-versions.html, and correct a bunch of outdated
text.

* www/bin/build-and-deploy.conf
Now build the 1.7/en branch for the English 1.7 version. Also,
build only the html-chunk format for nightlies now as that's the
only version that will carry the admonishment about incompleteness.

* www/index.en.html
Add links to the 1.7 versions, and remove links to nightlies save
for the html-chunk version.

Merge from ^/trunk/en r4192 and r4193.

Merge from ^/trunk/en r4202.