Add a task list generator example

Add a task list generator example

 * Add a small script that will generate a tasklist by running
   "git diff origin/master" and doing some simple checks on the
   newly added line.

   I run this script like that in the top level Qt creator
   source directory:
   while true; do scripts/mytasks.pl > qtcreator.tasks ; sleep 600 ; done

   This updates the tasklist every 10min. Qt Creator will detect the change
   and reload the list.