devel/py-p4python: Unbreak build, update maintainership

Add patch to fix build after recent devel/p4api update. Also, the
new maintainer says an update to 2022.1 is in progress.

Welcome (again), new port maintainer!

PR:		270583

devel/py-p4python/Makefile

@@ -1,11 +1,11 @@
 PORTNAME=	p4python
 PORTVERSION=	2016.1.1447008
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	antonfb@hesiod.org
 COMMENT=	Python bindings for the Perforce API
 WWW=		https://www.perforce.com/perforce/r14.2/manuals/p4script/python.programming.html
 

devel/py-p4python/files/patch-P4PythonDebug.cpp

@@ -0,0 +1,10 @@
+--- P4PythonDebug.cpp.orig	2023-04-01 20:37:16 UTC
++++ P4PythonDebug.cpp
+@@ -29,6 +29,7 @@ $Id$
+ #include <Python.h>
+ #include <iostream>
+ 
++#include <stdhdrs.h>
+ #include <debug.h>
+ 
+ #include "P4PythonDebug.h"