Version Control With Subversion Source

* src/en/book/ch00-preface.xml
Rework the 'Conventions' section to not break into subsections
(which is what we think the copyeditor probably meant when she
struck out the printed titles of those subsections).

More little fixes found while porting changes to the ORA tree.

s/Renumber/Renumbers/ for verb tense consistency.

Fix some minor capitalization and punctuation issues.

More minor tag tweaks for still more consistency.

Tiny tweak for consistency with similar sections.

* src/en/book/ch09.xml
Move misplaced Subcommands intro text. Tweak/add Options intro texts.

* src/en/book/ch09-reference.xml
Use common Subcommands sub-section intro text. Fix a command-in-title markup bit.

* src/en/book/ch09-reference.xml
* src/en/book/appb-svn-for-cvs-users.xml
* src/en/book/ch05-repository-admin.xml
* src/en/book/ch06-server-configuration.xml
Consistify! Refer to 'dump file' or 'dump stream', not 'dumpfile'
or 'dumpstream'. And wrap instances of stdin, stdout, and stderr
with <filename> tags (instead of a mix of filename, literal, and
emphasis tags).

* src/en/book/ch08-embedding-svn.xml
* src/en/book/ch03-advanced-topics.xml
* src/en/book/ch09-reference.xml
* src/en/book/ch06-server-configuration.xml
* src/en/book/ch04-branching-and-merging.xml
* src/en/book/ch02-basic-usage.xml
* src/en/book/ch07-customizing-svn.xml
Various fixes found while porting copyedit changes to ORA's tree.
This also includes a revert of the partial change to close up spaces
between footnote markers and preceding text, not because that change
was wrong, but because it was a tip-of-the-iceburg approach.
Consistency is easier to automate around.