- Updated comments to match usage.

- Added new makefile infrastructure for general documents. ...

- Created include files for various "standard" items (paths, rules, etc.).
  These will ultimately be used by all the other make include files in
  order to promote standardisation and consistency.
- Removed obsolete Perl script for handling document includes.

- Added default vpath for .pict.

- Added .svg to list of standard suffixes.

- Added support for Inkscape SVG files.

- Added case_study and introduction items to default patterns.

- Moved .aux files from TIDY_FILES to CLEAN_FILES.

- Added SLIDE_FILES and FIG_FILES variables for miscellaneous dependencies. ...

- Added default rules for {.png,.jpg} -> .graffle and .pict -> .png.

- Updated the list of standard suffixes as well.

- Updated list of standard vpaths.

- Split apart custom rules and variables.

- Changed order of centralised rule loading.

- Removed redundant target for regenerating patterns files.

- Deleted a couple of rogue vpaths that crept in.

- Revamped flow of control considerably because it wasn't working (appears to ...

be a problem with the order in which variables are defined).

- Added centralised makefiles for lectures.

- Added check to ensure that the patterns files exist. ...

- Updated default patterns files to match current usage.

- Added a call to "make clean" for the general graphics directory.

- 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.

- Added automatic generation warning to generated handbook files.

- Generalised section inclusion mechanism.

- Added templates for patterns and paper variable support files.

- Added readme file. ...

- Added master makefile template.

- Added required environment variables.

- Added include and template files for new handbook infrastructure.