Version Control With Subversion Source

Book Spanish. Translated three paragraphs.

Revert some changes from r2206.

That revision is partially a wrong merge. The pt-BR translation team
decided to fix the translation at the version 1.2 of the book. However,
that merge included changes related to the version 1.3. Only those changes
were reverted, namely the ones from r2160. Changes from r2142 needed not
to be reverted because they were not included in the merge.

* index.pt_BR.html:
Announce that the translation team is recruiting a new volunteer translator.

Translation status update.

Added some instructions about how to modify already committed
remarks associated to committed data.

Added 'vendor' term

Revert the part of r2271 that matched a change that won't be in
Subversion until at least v1.4, because the book is still on v1.3.

* en/book/ch09.xml
(svn.ref.svn.c.help): Restore the "--version" and "--quiet" options.

nebiac suggestion accepted.

Mention that the options "--help", "-h" and "-?" are synonyms for "help".

* en/book/ch09.xml
(svn.ref.svn.c.help): Mention that there are option synonyms for "help".

Update the documentation of "help" and "--version" to add some missing
information and to match the changes made in Subversion trunk r20301 and
r20353 to handle "help" and "--version [--quiet]" as two distinct commands.

* en/book/ch09.xml
(svn.ref.svn.sw): Mention the "--quiet" variant of "--version".
(svn.ref.svn.c.help): Update the list of switches.