Python versions with 2-digit minor are not currently supported, so fix it in preparation for python 3.10.
- Group Reviewers
O5: Ports Framework (Owns No Changed Paths) portmgr
- R11:40d7b487381c: Mk: add framework support for two digit python minor version
R11:5f69415313f8: Mk: switch from PYTHON_PORTVERSION to PYTHON_DISTVERSION
R11:0729af4255a6: Mk: switch PYTHON_REL to 5 digits to support python 3.10.x
Tested in poudriere with python 3.10 as default. Example build log: