Oelint-parser

Fixes

- don't parse the same file twice to avoid RecursionErrors

Fixes

- Add missing defaults for new override syntax

New

- 16 - support for bbclass parsing from inherit statements (limited to bbclasses of the same layer)

New

- 15 - Enable parsing new override syntax (see https://lists.yoctoproject.org/g/docs/message/1589 for details)

New

items: add switch to strip versions

variable values can have versioned items like


A = "\
foo (>= 1.2.3) \
"


allow to strip these optionally, by new `versioned` switch
of `get_items()` method of Variable class.

Fixes

- Fix handling of legacy constant and rule files