Log Message:
+ Name the programs installed by the db(2) package db2_*.

+ Put documentation under ${PREFIX}/share/doc instead of
  ${PREFIX}/share/doc/html.  Packages that install documentation under the
  "html" directory are supposed to move them to the "doc" \ 
directory when
  they're updated, but these packages are basically EOL'ed so just move
  them now.

+ Add full DESTDIR support.

Bump the PKGREVISION of databases/db to 3 and databases/db3 to 4.