- Fixed incorrect variable name in comment.

- Changed over to XML Include using xmllint.

- Documented why the resolver approach to style sheet dependencies doesn't ...

work on Chris's machine.

- Added XSLT_STYLESHEETS variable and made DERIVED_XML depend on this, so that the entire document will get rebuilt if the main HTML and LaTeX stylesheets get changed. Note that our attempt to use the resolver to get the paths for the XSL files didn't work and is currently just commented out.

- Switched to new content file inclusion script.

- Fixed error handling for recursive makes.

- Revamped the install mechanism to only install files that are actually ...

newer than the files on the server.
- Ensured that target install directories are created if they don't
  already exist.

- Fixed bogus >> redirect in print-questions targets.

- Fixed capitalisation of directory names.

- Added automatic generation warning to derived XML files.

- Tidied up clean target variables to eliminate redundant double-deleting.

- Corrected clean file lists to cater for PNG files in the print version.

- Generalised content path processing so that content files may be placed ...

anywhere within the paper directory tree.

- Added install targets. ...

- Now includes paper variables include file.
- Added conditionals to clean targets to check whether the "clean lists"
  are empty.

- Added include and template files for new handbook infrastructure.