mail/py-milter: fix runtime crash; pass on MAINTAINER

- Import patch to resolve crash during IPv6 connection handling. Submitter
  has coordinated fix with upstream; it can be removed next update.
- Pass on MAINTAINER to from ports@ to submitter.
- While here, move DIST_SUBDIR to appease portlint.

PR:		214317
Submitted by:	schmidt@ze.tum.de
MFH:		2016Q4 (blanket)

mail/py-milter/Makefile

@@ -3,13 +3,14 @@
 
 PORTNAME=	milter
 PORTVERSION=	1.0
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	mail python
 MASTER_SITES=	SF/${PYPORTNAME}/${PYPORTNAME}/${DISTNAME}
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	${PYPORTNAME}-${PORTVERSION}
+DIST_SUBDIR=	python
 
-MAINTAINER=	ports@FreeBSD.org
+MAINTAINER=	estartu@augusta.de
 COMMENT=	Python interface to Sendmail milter API
 
 LICENSE=	GPLv2+
@@ -22,7 +23,6 @@ CFLAGS+=	-I${LOCALBASE}/include
 
 PYPORTNAME=	${PKGNAMEPREFIX:C/[0-9]+-//}${PORTNAME}
 
-DIST_SUBDIR=	python
 USES=		python:2
 USE_PYTHON=	distutils autoplist
 

mail/py-milter/files/patch-miltermodule.c

@@ -0,0 +1,11 @@
+--- miltermodule.c.orig 2013-03-15 20:50:01 UTC
++++ miltermodule.c
+@@ -285,7 +285,7 @@ $ python setup.py help
+  * published.  Unfortunately I know of no good way to do this
+  * other than with OS-specific tests.
+  */
+-#if defined(__FreeBSD_kernel__) || defined(__linux__)
++#if defined(__FreeBSD__) || defined(__linux__)
+ #define HAVE_IPV6_RFC2553
+ #include <arpa/inet.h>
+ #endif