Version Control With Subversion Source

Patch from Brian Denny.

* doc/book/README: Recommend a VIM ftplugin for XML editing.

Patch from Brian Denny.

* doc/book/book/ch06.xml: Fix a typo and an incorrect usage of
'svn merge'.

Submitted by Alex Waugh <alex@...>.

* subversion/libsvn_wc/props.c
(svn_wc_prop_set): Force svn:executable to a specific value, Strip all
leading and trailing whitespace for svn:mime-type, svn:eol-style and
svn:keywords. Make sure that the last line in the prop value ends in a
newline for svn:ignore and svn:externals.

* subversion/include/svn_props.h
(SVN_PROP_EXECUTABLE_VALUE): New value to force svn:executable to.

* subversion/tests/clients/cmdline/prop_tests.py
(copy_should_use_copied_executable_and_mime_type_values): Take account of
svn:executable being forced to "*".
(strip_or_add_whitespace): New test for whitespace stripping. [note: part
of this test is temporarily disabled on Windows. --brane ]

* subversion/tests/clients/cmdline/schedule_tests.py
(add_executable): Take account of svn:executable being forced to "*".

* doc/book/book/ch06.xml: Mention new behaviour of svn:executable.

Patch from Larry Shatzer.

* doc/book/book/ch01.xml: Fix grammar.

Noted by Jani Averbach.

* doc/book/Makefile
(install-book-html): Install styles.css.

Inspired by Jani Averbach.

* doc/book/Makefile
(install-book-html-chunk): Install styles.css.

Fix issue 1158.

* doc/book/book/ch06.xml: Change fallback section name from "default"
to "global".

* subversion/libsvn_ra_svn/client.c
(find_tunnel_agent): Fallback to svn-tunnel-agent in global section.

Some book fixes by Francois Beausoleil <fbeausoleil@...>, reformatted
by Larry Shatzer <fugazi@...>.

Fix validation error

* doc/book/book/appb.xml: Simply add a simplesect.

Minor cleanups to the recent sussman Chapter 5 additions.