[v3,00/81] buildman: Refactor code and correct some pylint warnings

The buildman code has grown considerable since it was originally written.
In places it can be quite hard to understanding and work with.

This series improves things, particularly in the control and builder
parts, splitting functions into smaller sizes.

More work remains in buildthead._write_result() and other places.

Changes in v3:
- Add new patch to fix verboose typo and add comment
- Add new patch to allow --debug to enable debugging
- Add new patch to exit with the return code consistently
- Add new patch to rename the ARM boards
- Add new patch to drop dead code to handle :CONFIG_ construct
- Add new patch to avoid globals in leaf functions
- Add new patch with a test for Boards.scan_defconfigs()
- Add new patch with a test for Boards.output_is_new()
- Add new patch with a partial test for ensure_board_list()
- Add new patch to tidy up common code in parse_file()
- Add new patch to warn about dangling maintainer entries
- Add new patch to refactor target handling in Boards.scan()
- Add new patch to detect boards with multiple CONFIG_TARGETs defined
- Add new patch to detect boards with no CONFIG_TARGET defined
- Add new patch to correct operation of MAINTAINERS N:
- Add new patch to display a single line for missing maintainers
- Add new patch with an option to check maintainers
- Use the new --maintainer-check option in CI
- Add new patch to test for excluding things
- Correct test failure when using incorrect variable
- Fix 'scrop' typo
- Add new patch to use -D for --debug
- Add new patch with an option to check maintains and targets
- Fix 'bulidman' typo in three patches

Changes in v2:
- Correct operation of -A
- Use snake case for tests
- Add new patch to print the architecture for a board
- Drop patch to move -A logic up a little (since it breaks it)

Simon Glass (81):
  buildman: Fix verboose typo and add comment
  buildman: Allow --debug to enable debugging
  buildman: Exit with the return code consistently
  buildman: Rename the ARM boards
  buildman: Drop dead code to handle :CONFIG_ construct
  buildman: Avoid globals in leaf functions
  buildman: Add a test for Boards.scan_defconfigs()
  buildman: Add a test for Boards.output_is_new()
  buildman: Add a partial test for ensure_board_list()
  buildman: Tidy up common code in parse_file()
  buildman: Warn about dangling maintainer entries
  buildman: Refactor target handling in Boards.scan()
  buildman: Detect boards with multiple CONFIG_TARGETs defined
  buildman: Detect boards with no CONFIG_TARGET defined
  buildman: Correct operation of MAINTAINERS N:
  buildman: Just display a single line for missing maintainers
  buildman: Add an option to check maintainers
  buildman: Provide an argument to the -R option
  buildman: Tidy up pylint warnings in main
  buildman: Convert camel case in control.py
  buildman: Fix most pylint warnings in control
  buildman: Move full-help processing to main
  buildman: Move series calculations into a separate function
  buildman: Move fetch-arch code into a separate function
  buildman: Add a test for the -A option
  buildman: Drop use of builder in show_actions()
  buildman: Move dry-run handling higher in do_buildman()
  buildman: Add tests for excluding things
  buildman: Move board-selection code into a function
  bulidman: Move more code to determine_series()
  buildman: Move Boards-object code into a function
  bulidman: Move toolchain handling to a function
  bulldman: Set up output_dir earlier
  buildman: Move output-file setup into one place
  buildman: Pass option values to get_action_summary()
  buildman: Pass option values to show_actions()
  buildman: Build option-adjusting into a function
  buildman: Move counting of commits into a function
  buildman: Move setting up the output dir into a function
  buildman: Move commit numbering into determine_series()
  buildman: Avoid too many returns in do_buildman()
  buildman: Move remaining builder properties to constructor
  buildman: Tweak commits and show_bloat
  buildman: Moving running of the builder into a function
  buildman: Drop some unnecessary variables
  buildman: Adjust show_toolchain_prefix() to not return
  buildman: Move checking for make into run_builder()
  buildman: Move getting the adjust_cfg into run_builder()
  buildman: Use get_alow_missing() directly to avoid var
  buildman: Create a function to get number of built commits
  buildman: Convert camel case in cmdline.py
  buildman: Correct most pylint warnings in cmdline
  buildman: Add a test for --boards
  buildman: Convert to argparse
  buildman: Convert camel case in bsettings.py
  buildman: Convert camel case in builder.py
  buildman: Split parser creation in two
  buildman: Convert camel case in builderthread.py
  buildman: Correct most pylint warnings in builderthread
  buildman: Export _get_output_dir() to avoid warnings
  buildman: Correct invalid use of out_dir variable
  buildman: Drop unnecessary assignment of config_out
  buildman: Start a function to set up the make arguments
  buildman: Move setting of toolchain arguments to _build_args()
  buildman: Move more things into _build_args()
  buildman: Convert config_out to string IO
  buildman: Move reconfigure code into its own function
  buildman: Move bulid code into its own function
  buildman: Move reading of the done file into a function
  buildman: Move code to remove old outputs
  buildman: Move code to decide output dirs
  buildman: Move checkout code to a separate function
  buildman: Create a function to handle config and build
  buildman: Avoid passing result into _read_done_file()
  buildman: Tidy up reporting of a toolchain error
  buildman: Tidy up some comments in builderthread
  buildman: Move copy_files() out ot BuilderThread class
  buildman: Add a way to print the architecture for a board
  buildman: Use -D for --debug
  buildman: Add an option to check maintainers and targets
  buildman: Enable test coverage

 .azure-pipelines.yml                          |   2 +-
 .gitlab-ci.yml                                |   2 +-
 tools/buildman/board.py                       |   6 +-
 tools/buildman/boards.py                      | 243 ++++--
 tools/buildman/bsettings.py                   |  14 +-
 tools/buildman/builder.py                     | 262 +++---
 tools/buildman/builderthread.py               | 652 +++++++++------
 tools/buildman/buildman.rst                   |  32 +-
 tools/buildman/cmdline.py                     | 180 ++--
 tools/buildman/control.py                     | 790 ++++++++++++------
 tools/buildman/func_test.py                   | 311 ++++++-
 tools/buildman/main.py                        |  71 +-
 tools/buildman/test.py                        |  28 +-
 tools/buildman/test/Kconfig                   |  72 ++
 tools/buildman/test/boards/board0/MAINTAINERS |   5 +
 tools/buildman/test/boards/board2/MAINTAINERS |   5 +
 tools/buildman/test/configs/board0_defconfig  |   1 +
 tools/buildman/test/configs/board2_defconfig  |   1 +
 tools/buildman/toolchain.py                   |  14 +-
 tools/moveconfig.py                           |   2 +-
 tools/u_boot_pylib/test_util.py               |  10 +-
 21 files changed, 1840 insertions(+), 863 deletions(-)
 create mode 100644 tools/buildman/test/Kconfig
 create mode 100644 tools/buildman/test/boards/board0/MAINTAINERS
 create mode 100644 tools/buildman/test/boards/board2/MAINTAINERS
 create mode 100644 tools/buildman/test/configs/board0_defconfig
 create mode 100644 tools/buildman/test/configs/board2_defconfig