+20080308
+ + start modifying test/rain.c for threading demo.
+ + modify test/ncurses.c to make 'f' test accept the f/F/b/F/</> toggles
+ that the 'F' accepts.
+ + modify test/worm.c to show trail in reverse-video when other threads
+ are working concurrently.
+ + fix a deadlock from improper nesting of mutexes for windowlist and
+ window.
+
+20080301
+ + fixes from 20080223 resolved issue with mutexes; change to use
+ recursive mutexes to fix memory leak in delwin() as called from
+ _nc_free_and_exit().
+