textproc/py-sphinxcontrib-bitbucket: Fix Python 3 build/run

Fix Python 3 build, identified while testing devel/py-virtualenvwrapper:

Exception occurred:
  File "/usr/local/lib/python3.7/site-packages/sphinx/registry.py", line 196, in load_extension
    mod = __import__(extname, None, None, ['setup'])
  File "/usr/local/lib/python3.7/site-packages/sphinxcontrib/bitbucket.py", line 26
    except AttributeError, err:
                         ^
SyntaxError: invalid syntax

While I'm here, level up ports/python compliance:

  - Add python to CATEGORIES
  - Add LICENSE/LICENSE_FILE
  - Add NO_ARCH
  - Add missing RUN_DEPENDS
  - Correct RUN_DEPENDS version-specs

Approved by:	portmgr (blanket(s): build fix, ports compliance, dependencies)
MFH:		2019Q3

textproc/py-sphinxcontrib-bitbucket/Makefile

@@ -3,17 +3,23 @@
 
 PORTNAME=	sphinxcontrib-bitbucket
 PORTVERSION=	1.0
-PORTREVISION=	1
-CATEGORIES=	textproc
+PORTREVISION=	2
+CATEGORIES=	textproc python
 MASTER_SITES=	CHEESESHOP
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	nivit@FreeBSD.org
 COMMENT=	Sphinx/BitBucket integration
 
-RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sphinx>=1.1.3:textproc/py-sphinx@${PY_FLAVOR}
+LICENSE=	BSD2CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sphinx>=0.6:textproc/py-sphinx@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}docutils>=0.6:textproc/py-docutils@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	distutils autoplist
 
+NO_ARCH=	yes
+
 .include <bsd.port.mk>

textproc/py-sphinxcontrib-bitbucket/files/patch-setup.py

@@ -1,5 +1,5 @@
---- ./setup.py.orig	2012-08-20 21:53:58.000000000 +0200
-+++ ./setup.py	2012-08-20 21:54:10.000000000 +0200
+--- setup.py.orig	2011-04-24 16:19:59 UTC
++++ setup.py
 @@ -1,9 +1,5 @@
  # -*- coding: utf-8 -*-
  
@@ -10,7 +10,7 @@
  from setuptools import setup, find_packages
  
  try:
-@@ -43,5 +39,4 @@
+@@ -43,5 +39,4 @@ setup(
      include_package_data=True,
      install_requires=requires,
      namespace_packages=['sphinxcontrib'],

textproc/py-sphinxcontrib-bitbucket/files/patch-sphinxcontrib_bitbucket.py

@@ -0,0 +1,13 @@
+# Fix Python 3 build
+
+--- sphinxcontrib/bitbucket.py.orig	2019-08-11 09:19:09 UTC
++++ sphinxcontrib/bitbucket.py
+@@ -23,7 +23,7 @@ def make_link_node(rawtext, app, type, slug, options):
+         base = app.config.bitbucket_project_url
+         if not base:
+             raise AttributeError
+-    except AttributeError, err:
++    except AttributeError as err:
+         raise ValueError('bitbucket_project_url configuration value is not set (%s)' % str(err))
+     #
+     slash = '/' if base[-1] != '/' else ''