Version Control With Subversion Source

* doc/book/book/styles.css
New (currently exists to fix the sidebar output, but soon I'll use
this to make our HTML output shine, baby!)

* doc/book/Makefile
Pass a stylesheet param to the book-html target.

Fix some broken stuff in Chapter 7

* doc/book/book/ch07.xml
Finish up some TODOs.

* doc/book/book/ch05.xml
Put Apache stuff into its own subsection. Make a new section for
svnserve, and start populating it.

* doc/book/book/ch06.xml
Begin the work of re-working the Vendor Branches section.

* doc/book/book/ch07.xml
Begin the work of letting ra_svn see the light of day.

* doc/book/book/ch07.xml: fix a typo in some example code.

Book work.

* appa.xml: Massive re-org and changes to the appendix. Ready for review.

* ch04.xml: explain that 'svn switch' takes a -r option, and that it
preserves local mods as well. Thanks to M. S. Sriram
<mssriram@...> for pointing out that this idea was missing
in the book.

* ch02.xml: add some headings and rewordings, as suggested by Mason
Thomas <mlt_svn@...>.

Move the "compression" option into the "servers" file as "http-compression".

* subversion/libsvn_subr/config_file.c
(svn_config_ensure): Move 'compression' into the "servers" file as
'http-compression'.

* subversion/libsvn_ra_dav/ra_dav.h
(svn_ra_session_t): Add 'compression'. Remove 'config'.

* subversion/libsvn_ra_dav/session.c
(get_server_settings): Add 'compression', and parse for compression
settings on a per-server basis.
(svn_ra_dav__open): Update call to get_server_settings().

* subversion/libsvn_ra_dav/fetch.c
(custom_get_request): Remove 'config', add 'compression'.
(simple_fetch_file): Remove 'config', add 'compression', and update
call to custom_get_request().
(fetch_file): Remove 'config', add 'compression', and update call to
simple_fetch_file().
(svn_ra_dav__get_file): Update call to custom_get_request().
(svn_ra_dav__do_checkout): Update call to fetch_file().
(start_element, end_element): Update call to simple_fetch_file().

* subversion/libsvn_ra_dav/util.c
(svn_ra_dav__parsed_request): Get the compression info from the
session baton.

* doc/book/book/ch06.xml
Update to reflect move of 'compression' option into the 'servers' file.

Continue integrating fixes from Sunday's meeting.

* /trunk/doc/book/book/ch08.xml: Further refinements.

Some fixes for Chapter 6 (made at 36000 ft).

* ch08.xml: fix two typos that were preventing compilation.

* ch00.xml, ch01.xml: various fixups from review session feedback.

* ch02.xml: new tweaks, and a new section on the limitations of
mixed-rev working copies.