Log Message:
Update mail/maildrop to 2.0.2.  Changes from version 2.0.1 include

  + Install the makedat documentation; even though "makedat" is part
    of courier-authlib, that package installs no doucmentation for
    it, and "makedat" is used quite frequently in conjunction with
    maildrop.

  * fix for RFC822 compliance -- encode spaces that precede a newline.