chore(3p/lisp): import mime4cl source tarball

Used http://wcp.sdf-eu.org/software/mime4cl-20150207T211851.tbz (sha256
5a914669bba7561efe59a4fd0817204c07ad2add98b03ae206ef185ac04affb3).
Importing seems sensible since there's no upstream repo nor has their
been a release since 2015.

This is just an import commit, so the changes made to make it build are
more discoverable as their own commit.

Change-Id: I2ff28c3c7433abdf7857204bc89eaf9edc0b1cbc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3378
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

third_party/lisp/mime4cl/package.lisp

@@ -0,0 +1,107 @@
+;;;  package.lisp --- package declaration
+
+;;;  Copyright (C) 2005-2007, 2010 by Walter C. Pelissero
+
+;;;  Author: Walter C. Pelissero <walter@pelissero.de>
+;;;  Project: mime4cl
+
+;;; This library is free software; you can redistribute it and/or
+;;; modify it under the terms of the GNU Lesser General Public License
+;;; as published by the Free Software Foundation; either version 2.1
+;;; of the License, or (at your option) any later version.
+;;; This library is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; Lesser General Public License for more details.
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with this library; if not, write to the Free
+;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+;;; 02111-1307 USA
+
+(in-package :cl-user)
+
+(defpackage :mime4cl
+  (:nicknames :mime)
+  (:use :common-lisp :npg :sclf
+	;; for Gray streams
+	#+cmu :extensions #+sbcl :sb-gray)
+  ;; this is stuff that comes from SCLF and clashes with CMUCL's EXT
+  ;; package
+  (:shadowing-import-from :sclf
+			  #:process-wait
+			  #:process-alive-p
+			  #:run-program)
+  (:export #:*lazy-mime-decode*
+	   #:print-mime-part
+	   #:read-mime-message
+	   #:mime-part
+	   #:mime-text
+	   #:mime-binary
+	   #:mime-id
+	   #:mime-image
+	   #:mime-message
+	   #:mime-multipart
+	   #:mime-audio
+	   #:mime-unknown-part
+	   #:get-mime-disposition-parameter
+	   #:get-mime-type-parameter
+	   #:mime-disposition
+	   #:mime-disposition-parameters
+	   #:mime-encoding
+	   #:mime-application
+	   #:mime-video
+	   #:mime-description
+	   #:mime-part-size
+	   #:mime-subtype
+	   #:mime-body
+	   #:mime-body-stream
+	   #:mime-body-length
+	   #:mime-parts
+	   #:mime-part-p
+	   #:mime-type
+	   #:mime-type-string
+	   #:mime-type-parameters
+	   #:mime-message-headers
+	   #:mime=
+	   #:find-mime-part-by-path
+	   #:find-mime-part-by-id
+	   #:encode-mime-part
+	   #:encode-mime-body
+	   #:decode-quoted-printable-stream
+	   #:decode-quoted-printable-string
+	   #:encode-quoted-printable-stream
+	   #:encode-quoted-printable-sequence
+	   #:decode-base64-stream
+	   #:decode-base64-string
+	   #:encode-base64-stream
+	   #:encode-base64-sequence
+	   #:parse-RFC2047-text
+	   #:parse-RFC822-header
+	   #:read-RFC822-headers
+	   #:time-RFC822-string
+	   #:parse-RFC822-date
+	   #:map-parts
+	   #:do-parts
+	   #:apply-on-parts
+	   #:mime-part-file-name
+	   #:mime-text-charset
+	   #:with-input-from-mime-body-stream
+	   ;; endec.lisp
+	   #:base64-encoder
+	   #:base64-decoder
+	   #:null-encoder
+	   #:null-decoder
+	   #:byte-encoder
+	   #:byte-decoder
+	   #:quoted-printable-encoder
+	   #:quoted-printable-decoder
+	   #:encoder-write-byte
+	   #:encoder-finish-output
+	   #:decoder-read-byte
+	   #:decoder-read-sequence
+	   #:*base64-line-length*
+	   #:*quoted-printable-line-length*
+	   ;; address.lisp
+	   #:parse-addresses #:mailboxes-only
+	   #:mailbox #:mbx-description #:mbx-user #:mbx-host #:mbx-domain #:mbx-domain-name #:mbx-address
+	   #:mailbox-group #:mbxg-name #:mbxg-mailboxes))