Log Message:
Update pear-Mail_Mime to 1.8.7 and add LICENSE.

1.8.7: Release date: 2012-12-25 17:28 UTC

* Bug #5333: Fix more return by reference errors [alec]
* Bug #19754: Fix compatibility with PHP4 [alec]

1.8.6: Release date: 2012-10-23 09:52 UTC

* Bug #19473: PEAR::isError() compatibility problem with PHP 5.4 [alec]
* Bug #19497: Attachment filename is cut on slash character [alec]
* Bug #19665: Add Mail-Reply-To and Mail-Followup-To to structured recipient
  headers list [alec]