Updated XML test inputs

Seems to be due to differences in antiword version?  Current version
doesn't drop as much punctuation so have updated.
Improve scraping command

Reverse sources list, so that ids are created sequentially
Removed start parameter, which is mostly useless
Renamed end parameter to --limit option, which is also mostly useless
(except perhaps for testing purposes)
Add --stop-on-seen option which will be useful when running in cron
Better checks to prevent infinite processing without --limit option