fix(gazelle): handle purelib and platlib packages that don't set 'Root-Is-Purelib: true'#768

alexeagle merged 2 commits intomainbazel-contrib/rules_python:mainfrom

fix/what-s-the-deal-with-purelib-vs-platlibbazel-contrib/rules_python:fix/what-s-the-deal-with-purelib-vs-platlibCopy head branch name to clipboard