Log Message:
Update of mail/nail to 11.11.

Changes since 11.10 include:

* When sending messages that contain ASCII control characters but neither
  NULs nor non-ASCII characters, the quoted-printable MIME encoding is now
  used instead of 7bit.
* A dangling pointer after a memory reallocation could result in a coredump
  when the junk mail database was updated by a 'good' or a 'junk' command.
* The code for accessing the junk mail database has been made more machine-
  independent. It will not make a difference on most of the platforms on
  which nail runs. If your compiler does insert padding into C structs that
  contain only members of type char, you will have to create the junk mail
  database from scratch again, though.