Version Control With Subversion Source

Merge from trunk/en r3999, whose log message read like so:

* en/book/ch03-advanced-topics.xml
Add a note that explains why 'svn update --set-depth exclude'
doesn't look like a regular update.

* en/book/ch03-advanced-topics.xml
Add a note that explains why 'svn update --set-depth exclude'
doesn't look like a regular update.

For Issue 116 ("1.7 change: 'svn update' prints a header line")...

* en/book/ch03-advanced-topics.xml
* en/book/ch01-fundamental-concepts.xml
* en/book/ch02-basic-usage.xml
Begin updating 'update' examples to show the new header line(s).

* branches/1.6/en/book/ch03-advanced-topics.xml
Merge from trunk/en r3996.

* en/book/ch03-advanced-topics.xml
Fix some example output.

Lose no-longer-new newsflash about VCWS2e's publishing.

Edited wiki page SvnBook16Status through web user interface.

* www/old-versions.html
Add section for Version 1.5 links.

* www/index.en.html
Promote 1.6 version to first-class, and note that the nightly build
now tracks 1.7.

* en/book/book.xml
* en/book/ch00-preface.xml
Bump bump! Trunk now tracks the documentation of Subversion 1.7.

In branches/1.6:

* en/book/book.xml,
* en/stylesheets/custom-html-stylesheet.xsl
Remove "draft" indications/stylesheet stuff.