Version Control With Subversion Source

* ru/book/ch-basic-usage.xml: A small changes to give a more precise definition a description.

* src/en/book/ch-repository-admin.xml
More work on this chapter, including moving the hook script into...

* src/en/book/ch-reference.xml
...here.

* src/tools/build-nightlies: Improve mail failure reporting.

* src/en/book/ch-repository-admin.xml
Begin cracking apart Chapter 5.

* src/en/book/ch-reference.xml
* src/en/book/ch-advanced-topics.xml
Update (or remove) references to now-deleted materials.

Remove a little stray CDATA causing validation failures.

Translation status update.

* ru/book/ch-reference.xml: A command description meaning has been clarified.

* src/en/book/ch-preface.xml
Fill in the boilerplate how-to-give-feedback stuff.

* src/en/TODO
Remove item.

* src/ru/book/ch-advanced-topics.xml
src/ru/book/ch-basic-usage.xml
src/ru/book/ch-fundamental-concepts.xml
src/ru/book/ch-preface.xml
Sync with src/en/book up to r2606, translate newly added paras, and stop syncing for a while.

* src/ru/book/*
Remove property 'last-sync', and set this property on 'book' directory,
globally for all files.

* src/ru/sync.py: move from per-file syncing to syncing all-files-at-once.

* src/ru/TRANSLATION-STATUS: update status of translation.