fortune(6): Sync improvements with Free/Net/OpenBSD; deduplicate

fortune(6): Sync improvements with Free/Net/OpenBSD; deduplicate

- Typos, attributions and style improvements.
- Make attributions and style more consistent and conforming to Notes

Some of these are taken from FreeBSD, some from NetBSD and a few from
OpenBSD. Yet quite a few more are by yours truly.

Also:

- Fix typos in fortunes.sp.ok, murphy
- Remove duplicated fortunes (some where present thrice!)
  - fortunes is king and loses no cookie
  - fortunes-o contains no cookies already in fortunes
  - fortunes2-o contains no cookies already in fortunes2, fortunes or
    fortunes-o
  - fortunes2 contains no cookies already in fortunes
  - finally, cookies in fortunes2 were removed, if they were already in
    fortune-o

The reasoning for the last step is, that when fortunes2 gets merged into
fortunes, no possible offensive quotes show up there, that were already
deemed offensive and moved from fortunes to fortunes-o

- Remove some quotes from murphy-o already in other files, sort
- Remove duplicates within limerick (via OpenBSD)
- Sync startrek to NetBSD/OpenBSD; sort
- Typos in zippy