Version Control With Subversion Source

Remove no-longer-applicable TODO item.

Consistify (and correct) the book diagrams.

* doc/book/book/images/ch02dia2.png
* doc/book/book/images/ch02dia3.png
* doc/book/book/images/ch04dia1.png
* doc/book/book/images/ch04dia2.png
* doc/book/book/images/ch02dia4.png
* doc/book/book/images/ch02dia5.png
* doc/book/book/images/ch04dia3.png
* doc/book/book/images/ch02dia6.png
* doc/book/book/images/ch04dia4.png
* doc/book/book/images/ch02dia7.png
* doc/book/book/images/branches.ppt
* doc/book/book/images/VersioningModels.ppt
* doc/book/book/images/ch02dia1.png
Change "Joe" and "Jane" to "Harry" and "Sally". Remove the colors, and
fix "prime" indicators (ala A') to not have the smart-quotes characters.

* doc/book/book/images/ch05dia1.png
* doc/book/book/images/ch05dia2.png
Remove these no-longer-used diagrams.

Removed references to dead chapter 5 diagrams -- use text instead.

Finish (for now) documenting svndumpfilter.

Book tweaks.

* doc/book/TODO: remove finished stuff
* doc/book/TODO: fix typo.

Fix a not-quite-truth regarding 'svnadmin setlog'.

And yet still more Subversion book work.

* doc/book/TODO:
Remove svndumpfilter TODO.

* doc/book/book/ch05.xml
(svndumpfilter): (Mostly) Document this badboy.
(Migrating a Repository): Explain the --parent-dir option for svnadmin load.

* doc/book/book/ch04.xml
(Undoing Changes): Add a reference to the new svndumpfilter documentation.

Begin documentation of svndumpfilter.

Still more Subversion book work.

* doc/book/TODO:
Updating TODOs, updating TODOs...

* doc/book/book/ch05.xml
Fix a bogus reference to 'svnadmin list-used-dblogs' (thanks, Juanma
Barranquero, for noticing). Also, talk about some limitations of
Berkeley DB.

* doc/book/book/ch07.xml
Note how 'svn status' and 'svn commit' work with respect to
svn:externals.

At least sort the lettered status codes alphabetically.