Version Control With Subversion Source

Finish issue 58 ("plain password authentication with Apache").

* en/book/ch06-server-configuration.xml
(svn.serverconfig.httpd.authn.basic, svn.serverconfig.httpd.authn.digest):
Point out which Apache modules are required for Basic and Digest
authentication, as well as the way to select the file-based authn
provider for those types.

* en/book/ch06-server-configuration.xml
(svn.serverconfig.httpd.extra.logging): Document trick for
selectively logging requests (wrapped in typical cmpilato
verbosity, of course).

Finish issue 148 ("ch06: Give suggestions for tuning Apache to
maximize value of ra_serf").

* en/book/ch06-server-configuration.xml
(svn.serverconfig.httpd.perf): New section.

In some of my recent examples, replace
'http://localhost/svn/repositories/repos' with
'http://svn.example.com/repos' for consistency with
the rest of the book.

* en/book/ch03-advanced-topics.xml
* en/book/ch09-reference.xml

Add --show-inherited-props to applicable reference sections.

* en/book/ch09-reference.xml

(svn.ref.svn.sw.show_inherited_props): New option.

(svn.ref.svn.c.propget,
svn.ref.svn.c.proplist): Add content re new option.

* en/book/images/cc-by.png
New image (intended for inclusion with r4200, but ... oops.)

Merge from ^/trunk/en r4328 (dropping mentions of the old -deps
tarball).

* en/book/appa-quickstart.xml
Drop stuff about the -deps tarball. It isn't offered any more, and
INSTALL is the canonical source of installation information anyway.

Finish issue 170 ("In Subversion 1.8, libsvn_ra_neon has been
removed."), save for a small bit regarding library dependencies that
I'll pick up in a subsequent revision.

* en/book/appc-webdav.xml,
* en/book/ch07-customizing-svn.xml
* en/book/ch08-embedding-svn.xml
Make neon go (mostly) away. *Poof!*

Finish issue 181 ("ch09: Document new-to-1.8 SVNUseUTF8 mod_dav_svn
directive").

* en/book/ch09-reference.xml
(svn.ref.mod_dav_svn.conf.directives): Document the new SVNUseUTF8
directive.

Patch by: Neels J Hofmeyr <neels{__AT__}elego.de>
(Tweaked by me.)