Add more full-text reports

A useful demonstration of full-text search will require a signficant
body of text, including various forms of the same word to demonstrate
stemming, thesauri, and ts_rewrite() functionality, as well as to
demonstrate the use of relevancy ranking and headline functions.

Creative writing is hard; some of these entries were suggested by my
children. Please contribute more :)

Signed-off-by: Dan Scott <dan@coffeecode.net>