Version Control With Subversion Source

Remove unnecessary line break.

Remove some blank lines.

Fix indentation

Typo fixes.

Sync with English version.

Update with "--incremental" option for svn hotcopy.

Minor fix: [miscellany] was missing square brackets.

New [working-copy] section with `exclusive-locking-clients` and `exclusive-locking` runtime configuration variables.
- http://subversion.apache.org/docs/release-notes/1.8.html#exclusivelocking
- http://subversion.tigris.org/issues/show_bug.cgi?id=4176

* en/book/ch07-customizing-svn.xml
Added new [working-copy] section with relevant configurable variables.

`svndumpfilter` in Subversion 1.8 accepts new `--drop-all-empty-revs` option.
- http://svn.apache.org/r1451462
- http://subversion.tigris.org/issues/show_bug.cgi?id=3681

* en/book/ref-svndumpfilter.xml
(svn.ref.svndumpfilter.sw.drop_all_empty_revs):
new option for `svndumpfilter` exclude/include commands.

Document third parameter to post-commit hook (txn-name) introduced in 1.8
- https://subversion.apache.org/docs/release-notes/1.8.html#hooks-post-commit
- https://sourceforge.net/p/svnbook/tickets/217/
Patch by Andreas Stieger.