www/pear-HTTP_Request2: Import fix from upstream

pfSense users reported a communication error on code that uses
HTTP_Request2 after we moved to most recent version. After
reporting the issue to upstream they came up with a fix that
confirmed working.

This change adds upstream fix and while here, I also changed
USES order to make portlint happy and added LICENSE.

[1] https://redmine.pfsense.org/issues/12048

Obtained from: pfSense
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D31000