Version Control With Subversion Source

export, update, and status subcommands.

* src/en/TODO
Finish a TODO.

* src/en/book/ch07.xml
(Externals Definitions): Mention that you can use the option
to disable externals definition handling.

* src/en/book/ch09.xml
Describe the --ignore-externals option, and note its availability
for the svn subcommands. Also, note the availability of the
--use-pre-hook-script and --use-post-hook-script options to
svnadmin load (which I missed in my last commit).