Version Control With Subversion Source

This is a major directory reorganization commit.

First, we add some new containers for various non-latest versions of
the book:

* branches/1.0,
* branches/1.1,
* branches/1.2,
* branches/1.4,
* branches/1.5
New directories.

Then we put a copy of the tools into each of those containers:

* branches/1.0/tools
Copied from trunk/src/tools.

* branches/1.1/tools
Copied from trunk/src/tools.

* branches/1.2/tools
Copied from trunk/src/tools.

* branches/1.4/tools
Copied from trunk/src/tools.

* branches/1.5/tools
Copied from trunk/src/tools.

Then we move translations into the correct version slot:

* branches/1.0/es
Moved from trunk/src/es.

* branches/1.2/it
Moved from trunk/src/it.

* branches/1.4/nb
Moved from trunk/src/nb.

* branches/1.4/ru
Moved from trunk/src/ru.

* branches/1.5/de
Moved from trunk/src/de.

* branches/1.5/fr
Moved from trunk/src/fr.

* branches/1.6/zh
Moved from trunk/src/zh.

Finally we remove the now-unnecessary 'trunk/src' directory, moving
its contents up a directory level:

* trunk/en
Moved from trunk/src/en.

* trunk/tools
Moved from trunk/src/tools.

* trunk/src
Removed.

Edited wiki page SvnBook16Status through web user interface.

* trunk/www
Move this up a directory level, from here...

* www
...to here.

* branches/1.6/en,
* branches/1.6/tools
Copy these from their trunk counterparts.

* branches/1.6
Create location for long-lived 1.6 doc maintenance.

* src/en/book/ch09-reference.xml
Completely my read-thru edits of this chapter. And the book as a
whole. Yay!

* src/en/book/ch09-reference.xml
Tag tweaks only.

* src/en/book/ch09-reference.xml
Expand reference section titles with short descriptions of each tool.

Try to reduce the verbosity of the reference chapter, eliminating
information of questionable continued value and presenting other
information in a more concise fashion.

* src/en/book/ch09-reference.xml
Lose 'Changes' and 'Accesses repository' bits from reference
entries, and trade 'Alternate names' for additional <refname>s.

Update some web/email references.