* THANKS: Now that we have a policy, applied it to the existing

* THANKS: Now that we have a policy, applied it to the existing
list.  This in no way demeans the work of those people removed
from the THANKS file, who are still credited in the ChangeLogs and
without who's work, libtool would not work so well on many
platforms, but serves to highlight the outstanding and continued
contribution the remaining people have made.  And I quote, "We
reserve THANKS for people who have made major contributions, and
leave the credit to the others for the ChangeLog only."