Changes in version 0.4:

* More standard configure and Makefile. Try `configure --help'.

* Added info file.

* Added new option -i for inverted (white on black) pbm files.

* Small changes to 'layout detector'. See the '-l' option in
  'ocrad --help'.

* Improved recognizing quality.

Be aware that frames, lines, pictures, merged chars, etc, can
(by the moment) totally confuse ocrad.
