This addresses issue 4884 where sending an email with Umlauts in the From
Name causes the User's Name and Email to be malformed. This is due to
outdated RFC822 from Pear. This replaces the old RFC822 Pear module with the
latest release so that we are up to date.

This commit addresses an issue where pre_replace fails in php 7.x resulting
in a ticket with an empty body.

This commit attempts to remove all coding standard warnings emitted by PHP
7.0.

This patch drops the content after the last boundary in a multi-part message
which prevents it from being considered in some case where the available
content sections are not favorable.

Backport me to v1.9

This patch drops the content after the last boundary in a multi-part message
which prevents it from being considered in some case where the available
content sections are not favorable.

Backport me to v1.9

Which seems to be used by recent versions of Andriod OS. It appears to be a
synonym of `multipart/related`

Also add several lint fixes for packaging

Remove usage of preg_match_all for large strings

This patch uses a 'StringView' to create a string which is a window of
another string. The __toString() method is employed to fetch a lazy copy of
the window which can be usually immediately discarded. This is optimal for
one-time-use string copies like what is used in the mail parsing.