Update to 2.3.1

Changes:	https://github.com/PyCQA/astroid/blob/2.3/ChangeLog

devel/py-astroid/Makefile

@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PORTNAME=	astroid
-PORTVERSION=	2.3.0
+PORTVERSION=	2.3.1
 CATEGORIES=	devel python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}

devel/py-astroid/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1569514156
-SHA256 (astroid-2.3.0.tar.gz) = c7e2e5773d87ccc00d01c273e439386f4d6d63cce61317a79ccce5880162f9fb
-SIZE (astroid-2.3.0.tar.gz) = 295294
+TIMESTAMP = 1569948552
+SHA256 (astroid-2.3.1.tar.gz) = b7546ffdedbf7abcfbff93cd1de9e9980b1ef744852689decc5aeada324238c6
+SIZE (astroid-2.3.1.tar.gz) = 297020

devel/py-astroid/files/patch-astroid-__pkginfo__.py

@@ -1,13 +0,0 @@
---- astroid/__pkginfo__.py.orig	2019-09-24 07:23:50 UTC
-+++ astroid/__pkginfo__.py
-@@ -26,8 +25,7 @@ install_requires = [
-     "lazy_object_proxy",
-     "six",
-     "wrapt",
-     'typing;python_version<"3.5"',
--    'typed-ast<1.3.0;implementation_name== "cpython" and python_version<"3.7"',
--    'typed-ast>=1.3.0;implementation_name== "cpython" and python_version>="3.7" and python_version<"3.8"',
-+    'typed-ast>=1.4.0,<1.5;implementation_name== "cpython" and python_version<"3.8"',
- ]
- 
- # pylint: disable=redefined-builtin; why license is a builtin anyway?

devel/py-astroid/files/patch-astroid.egg-info-requires.txt

@@ -1,16 +0,0 @@
---- astroid.egg-info/requires.txt.orig	2019-09-24 09:44:15 UTC
-+++ astroid.egg-info/requires.txt
-@@ -2,11 +2,8 @@ lazy_object_proxy
- six
- wrapt
- 
--[:implementation_name == "cpython" and python_version < "3.7"]
--typed-ast<1.3.0
--
--[:implementation_name == "cpython" and python_version >= "3.7" and python_version < "3.8"]
--typed-ast>=1.3.0
-+[:implementation_name == "cpython" and python_version >= "3.5"]
-+typed-ast>=1.4.0,<1.5
- 
- [:python_version < "3.5"]
- typing