Each format is now in it's own subdirectory, which allows the
format to have as many files as it likes. The formats are now
detected automatically (no need to edit lib.php anymore) and
the parent class is now in mod/quiz/format.php
Lastly, I added Paul Shew's new GIFT format.
created. Works OK after limited testing.
I've also renamed some strings to do with "Random Match", so that this
question type is now called "Random Short-Answer Match".
Later there will be a new 'Random Match' which randomly selects one of the
existing "Match" questions.
... this grade is used as the default grade when adding questions
to a quiz.
At the moment it's just so that some imported questions can have
different defaults, but a field should be added to all question
editing pages.
