Version Control With Subversion Source

* src/en/book/ch-advanced-topics.xml
* src/en/book/ch-basic-usage.xml
Fix some uses of subcommand aliases.

* src/en/book/ch-repository-admin.xml
Add a warning about svndumpfilter literal path interpretation as
requested by Tigris.org user Jeff C <jeffc@...> in Subversion
issue #1853 (http://subversion.tigris.org/issues/show_bug.cgi?id=1853).

* src/en/book/ch-advanced-topics.xml
Add a useful note about externals, partially suggested by Eric Hanchrow
<offby1@...>.

* src/en/book/ch-repository-admin.xml
My experience with BDB repositories is that they are more than just
slightly larger than FSFS ones, and grossly larger if logfiles are
present. Update the comparison table accordingly.

Incorporate changes from Ben review. Thanks Ben!

* book/ch-basic-usage.xml: Tighten up chapter even tighter.

* src/en/book/ch-repository-admin.xml
Some tweaks based on Fitz's review.

* src/ru/book/ch-branching-and-merging.xml
Correction of an error noticed by Artem Chuprina <ran{}ran.pp.ru>

* src/ru/TRANSLATION-STATUS
Has been updated by the sync.py

* src/ru/sync.py
Paraphrase in the help message

Tweaks based on Fitz's review.

* src/en/book/ch-developer-info.xml
Update 'svn --version' example. Move the "Inside the WC Admin Area"
section to just after the layers section, and before the code samples.
While here, add a paragraph about the format of the .svn/entries file
and how Subversion auto-upgrades working copies.

Fix a broken file:// URL.

Incorporate changes from Mike's review. Thanks Mike!

* book/ch-basic-usage.xml: Tighten up chapter and remove reference
stuff.