- Split off various standardised rules.

- Added support for web server install target.

- 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.

- Fixed rule for generating PDF from Inkscape SVG.

- Added support for Inkscape SVG files.

- 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.

- Added default rules for PS/EPS -> PDF.

- Added standard "figures2up" target.

- Deleted a rogue echo command inserted during debugging.

- 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.