Version Control With Subversion Source

Change copyright holder of book from Collabnet to the authors.
(With blessing of Collabnet.)

* doc/book/book/copyright.xml: change copyright holder.

Book improvements.

* doc/book/book/ch04.xml:
- add new 'tip' about using 'svn log --stop-on-copy' to find branch's base.
- clarify repeated-merge example.
- add new mini-section which explains '--ignore-ancestry' option.

* doc/book/TODO: scratch off finished things.

Book tweaks.

* doc/book/book/ch06.xml: fix capitalization of Harry & Sally in
regular textual descriptions.

* doc/book/book/appa.xml: be more gracious in describing 'cvs up'.

* doc/book/TODO: scratch off finished things.

Subversion Book fixes.

* doc/book/TODO
Un-TODO some stuff done to-night.

* doc/book/book/ch05.xml
(Creating the Layout, and Importing Initial Data): Use 'svn list' to
show the results of the import.

* doc/book/book/ch07.xml
(Advanced Topics): Kill joke about refunds.
(Config): Why do people keep calling these things regular
expressions? Patterns, people, patterns.
(Special Properties): Fix capitalization of section title. Move
some svn:mime-type auto-setting info to ...
(Automatic Property Setting): ... a New section.
(Externals Definitions): Clarify how to set the property, and stop
using the term "auxiliary working copies."
(General Vendor Branch Management Procedure): Clarify some vague
stuff (you know, vague like this log message entry).

Remove from TODO a fix that has already been made.

* doc/book/TODO: rewrite book's TODO based on last 2 months of user comments.

* doc/book/book/foreword.xml: Happily shill for the Mother Ship.

CollabNet effectively subsidized a lot of the time Ben, Mike, and Fitz
spent gathering usage information, not to mention all the time spent
actually developing Subversion of course. Therefore mention CollabNet
in the foreword, after checking that the authors are okay with this.

Fix a documentation typo reported by Joey Smith <joey@...>.

* doc/book/book/appc.xml:
Add "be".

Misssssing essss. Thanks to Liam Healy (liam.healy@...) for
finding it.

* doc/book/book/ch05.xml: +s.

Fix some typos and small mistakes. Suggestions provided by Florian
Zumbiehl (florz@...).

* doc/book/book/ch03.xml, doc/book/book/ch04.xml,
doc/book/book/ch06.xml, doc/book/book/ch07.xml: Fix nits.