Version Control With Subversion Source

* src/en/book/ch-advanced-topics.xml
(Network Model): Rework to be ... Pilatoan, and revert the changes
to the section IDs made when moving this section from the Server
Configuration chapter. (It was rather the point of using such IDs
to allow us to move sections around without breaking URLs in our
HTML forms of the book.)

* src/en/book/ch-server-configuration.xml
* src/en/book/ch-customizing-svn.xml
Update cross-reference IDs.

* src/en/book/ch-branching-and-merging.xml: remove spurious whitespace.

Add some more index entries.

Finish up my chapter 6 changes, it's ready for reviewing.

* src/en/ch-server-configuration.xml:

- remove creds-caching section & update xrefs
- stop pushing mod_deflate
- mention that path-based authz is a perf hit
- make sure factorized path-based-authz section isn't mentioning
apache; keep it general.

* src/en/ch-advanced-topics.xml:

- add creds-caching section.
- rewrite intro to creds-caching section.

* src/en/ch-customizing-svn.html

- update xref

Update the runtime configuration REG4 example file.

* src/en/ch-server-configuration.xml: remove spurious whitespace.

* www/index.ru.html: nightly build is for version 1.4 now

* src/ru/Makefile
src/ru/book/book.xml

Corrections concerning L10N_REVISION variable.

Book Russian. Merge with changes from r2580:r2601 of the src/en/book. More detail in logs for corresponding revisions.

Book Russian. Merge with changes from r2573,r2574,r2576 of the src/en/book. More detail in log for r2573,r2574,r2576.