Version Control With Subversion Source

* ch09-reference.txt: Use the more familiar Linux 'Aborted' message.

Document missing subcommands in svnadmin and svnsync.

This partially fixes issue #120.

Thanks to Daniel Shahaf (d.s@...) for catching this!

* book/ch09-reference.xml: Document svnadmin commands: crashtest,
setrevprop, setuuid, and upgrade. Also document svnsync help.

Document broken locks in svn update reference.

Bug found in tech review by the indefatigable Karl Heinz Marbaise (khmarbaise@...).

* book/ch09-reference.xml: Fixey.

Fix some inter-sentence spacing.

* src/en/book/ch04-branching-and-merging.xml
Add missing log messages to examples.

Suggested by: Daniel Shahaf

* src/en/book/ch09-reference.xml
Document --cl as an alias for the --changelist option.

* src/en/book/ch03-advanced-topics.xml
Remove "Skipped" line from changelist example. (This used to be
present, but I cried foul and fixed it in Subversion.)

Patch by: Karl Heinz Marbaise

* src/en/book/ch03-advanced-topics.xml
Update an error message.

Suggested by: Karl Heinz Marbaise

Place reference doc for svn:mergeinfo into the versioned props
section, where it belongs.

Patch kindly provided by the esteemed Paul Burba <ptburba@...>.

* book/ch09-reference.xml: Movey groovey.

* src/en/book/ch03-advanced-topics.xml
Consistify an example repository URI.

Suggested by: Karl Heinz Marbaise