tools: fix SPDX identifiers

Updating supported toolchain printing with new options

Add ARMC5 as an option for the -t argument

Whitespace clean up

Add --custom-target argument to get_default_options_parser

If custom_targets_directory exists use it over source_dir

Python2+3: Use absolute import where possible

Revert "Remove Cortex-A mbed OS 5 support" ...

I changed the python and json files to re-registering GR-PEACH to Mbed OS 5.

Update Cortex-A build errors

Handle situation when options.source_dir is None

Add custom_targets.json file contents to targets ...

Avoid duplication of update_target_data() code
Keep "custom_targets.json" filename definition in Targets()

Find extra targets in all source folders

Move profile processing into build_api

Revert "Disable Cortex-A in tooling to provide better error messages" ...

This reverts commit f5859b3.

Disable Cortex-A in tooling to provide better error messages ...

Disable Cortex-A in compile supported matrix
Disable Cortex-A in export supported matrix

Build: Rework build profiles ...

Rename small.json to release.json, default.json to develop.json and make
it the default profile.

Make the debug profile the default used for exporting

Remove deprecated flags args ...

The tools will no longer accept `--cflags`, `--cppflags`, or
`--ldflags`. Instead, the ability to modify these flags is
provided by the `--profile` argument. Documentation for the
`--profile` argument may be found in
docs/Toolchain_Profiles.md

Accept profile name as well as file path for tools/make.py --profile ...

--profile can be used with just a profile name eg. default, debug as
long as <name>.json file is in default profile directory.

Fix style of implementation of toolchain profiles

Replace -o with profiles

Add app config switch to options.py and make.py

Make selection of c library used consistent. ...

* rename "default_build" property into "default_lib"
* rename "standard" value for "default_build" into "std".

Improve naming of the command line option which select the c library to use. ...

* rename 'small-build' into 'small-lib'
* rename 'standard-build' into 'std-lib'

Rename big-build option into standard-build. ...

With this change, the name is more descriptive and aligned with the targets
definitions in hal/targets.json.

Allow 'small-build' and 'big-build' to be used as options. ...

These two flags are already tested in tools/toolchains/gcc.py but can't
be used at the moment because they are not part of the argument list of
the option parameter.

Format and document options.py

Add colorization option to default options parser ...

should be picked up by most cli's

nargs="*" -> action="append"

Force conversion of all -i, -m, -t to the correct case