Version Control With Subversion Source

Updated rest of preface.

Changes for German 1.6 version.

Added German 1.6 version.

* branches/1.7/en/stylesheets/custom-html-stylesheet.xsl
Fix typos, and refer to "Apache Subversion" instead of merely "Subversion".

* branches/1.6/en/stylesheets/custom-html-stylesheet.xsl
Fix typos.

* en/book/styles.css
Show email links in variable-width font.
When printing:
- set the preferred baseline font size to 11pt.
- don't colorize links.
- don't underline links unless they are cross-references to other
book sections.

* en/stylesheets/custom-html-stylesheet.xsl
Rename #vcws-header to #vcws-version-notice.

* en/book/styles.css
Style tweaks to track the renamed block.

[In branches/1.7]

* en/stylesheets/custom-html-stylesheet.xsl
Rename #svn-footer to #vcws-footer, and wrap long lines.
Add #vcws-version-notice navigation header hook XSL.

* en/book/styles.css
Style tweaks to support the new #vcws-version-notice block and track
the rename of the #svn-footer one.

[In branches/1.6]

* en/stylesheets/custom-html-stylesheet.xsl
Wrap long lines.

[In branches/1.6]

* en/stylesheets/custom-html-stylesheet.xsl
Rename header block ID from "vcws-header" to "vcws-version-notice"

* en/book/styles.css
Updating styles to track the ID change, to avoid printing that
block, and to avoiding shrinking and centering its text.