Version Control With Subversion Source

* src/en/TODO
Remove the TODO about the new revprop hook action arguments
and stdin utility -- the book doesn't cover hooks in that
level of detail because the hook templates are self-describing.

Document the --ignore-externals option for svn's checkout,
export, update, and status subcommands.

* src/en/TODO
Finish a TODO.

* src/en/book/ch07.xml
(Externals Definitions): Mention that you can use the option
to disable externals definition handling.

* src/en/book/ch09.xml
Describe the --ignore-externals option, and note its availability
for the svn subcommands. Also, note the availability of the
--use-pre-hook-script and --use-post-hook-script options to
svnadmin load (which I missed in my last commit).

Document the --use-pre-commit-hook and --use-post-commit-hook
options to 'svnadmin load'.

* src/en/TODO
Finish a TODO.

* src/en/book/ch05.xml
(Migrating a Repository): Document the use of the options.

* src/en/book/ch09.xml
(svnadmin): Describe the options.

* src/en/book/ch07.xml
(Locking): start fleshing out the new locking section.

* src/en/book/ch02.xml
(When Locking is Necessary): fix wording.

Book Spanish. Translated two paragraphs.

Remove duplicated wording.
Reported by Simon McKenna <Simon.McKenna@...>.

* en/book/appc.xml (svn.webdav.basic): Remove duplicated wording.

Book Spanish. Translated two paragraphs.

Checking work of 'sync.py'. It work!

* ru/sync.py:
Fixing first bug.

* ru/LAST_UPDATED:
* ru/book/ch02.xml:
* ru/book/ch03.xml:
* ru/book/ch05.xml:
* ru/book/ch06.xml:
* ru/book/ch09.xml:
Are merged with en/.

Are translated 40% of ch03.xml and added new script for
synchronisation with en/.

* ru/TRANSLATION-STATUS:
Change status for ch03.xml.

* ru/sync.py:
New script for synchronisation.

* ru/LAST_UPDATED:
Was deleted empty line.

* ru/book/ch02.xml:
'-' was replaced with '—'.

* ru/book/ch03.xml:
40% are translated.

* ru/Makefile:
Rule 'sync' was removed, now for this are used 'sync.py'.

Book Spanish. Translated two paragraphs.