Make compatible with Trac 1.6 and Python 3

[Jun Omae]

$ ~/venv/trac/1.6/bin/python setup.py test
running test
WARNING: Testing via this command is deprecated and will be removed in a future version. Users looking for a generic test entry point independent of test runner are encouraged to use tox.
/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/command/test.py:194: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  ir_d = dist.fetch_build_eggs(dist.install_requires)
/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/command/test.py:195: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  tr_d = dist.fetch_build_eggs(dist.tests_require or [])
/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/command/test.py:196: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  er_d = dist.fetch_build_eggs(
running egg_info
writing TracAdvancedTicketWorkflow.egg-info/PKG-INFO
writing dependency_links to TracAdvancedTicketWorkflow.egg-info/dependency_links.txt
writing entry points to TracAdvancedTicketWorkflow.egg-info/entry_points.txt
writing requirements to TracAdvancedTicketWorkflow.egg-info/requires.txt
writing top-level names to TracAdvancedTicketWorkflow.egg-info/top_level.txt
reading manifest file 'TracAdvancedTicketWorkflow.egg-info/SOURCES.txt'
adding license file 'COPYING'
writing manifest file 'TracAdvancedTicketWorkflow.egg-info/SOURCES.txt'
running build_ext
Traceback (most recent call last):
  File "/home/jun66j5/src/advancedticketworkflowplugin/1.2/setup.py", line 26, in <module>
    setup(
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/__init__.py", line 107, in setup
    return distutils.core.setup(**attrs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 185, in setup
    return run_commands(dist)
           ^^^^^^^^^^^^^^^^^^
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/_distutils/core.py", line 201, in run_commands
    dist.run_commands()
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 969, in run_commands
    self.run_command(cmd)
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/dist.py", line 1244, in run_command
    super().run_command(command)
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/_distutils/dist.py", line 988, in run_command
    cmd_obj.run()
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/command/test.py", line 224, in run
    self.run_tests()
  File "/home/jun66j5/venv/py311/lib/python3.11/site-packages/setuptools/command/test.py", line 227, in run_tests
    test = unittest.main(
           ^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/main.py", line 101, in __init__
    self.parseArgs(argv)
  File "/usr/lib/python3.11/unittest/main.py", line 150, in parseArgs
    self.createTests()
  File "/usr/lib/python3.11/unittest/main.py", line 161, in createTests
    self.test = self.testLoader.loadTestsFromNames(self.testNames,
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/loader.py", line 220, in loadTestsFromNames
    suites = [self.loadTestsFromName(name, module) for name in names]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/loader.py", line 220, in <listcomp>
    suites = [self.loadTestsFromName(name, module) for name in names]
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/unittest/loader.py", line 205, in loadTestsFromName
    test = obj()
           ^^^^^
  File "/home/jun66j5/src/advancedticketworkflowplugin/1.2/advancedworkflow/tests/__init__.py", line 6, in test_suite
    from advancedworkflow.tests import controller
  File "/home/jun66j5/src/advancedticketworkflowplugin/1.2/advancedworkflow/tests/controller.py", line 14, in <module>
    import advancedworkflow.controller
  File "/home/jun66j5/src/advancedticketworkflowplugin/1.2/advancedworkflow/controller.py", line 167
    except ResourceNotFound, e:
           ^^^^^^^^^^^^^^^^^^^
SyntaxError: multiple exception types must be parenthesized

[Jun Omae]

In 18558:

TracAdvancedTicketWorkflow 1.2.2dev: make compatible with Trac 1.6 and Python 3 (closes #14249)