Merge branch 'en/fast-export-encoding'

The "git fast-export/import" pair has been taught to handle commits with log messages in encoding other than UTF-8 better. * en/fast-export-encoding: fast-export: do automatic reencoding of commit messages only if requested fast-export: differentiate between explicitly UTF-8 and implicitly UTF-8 fast-export: avoid stripping encoding header if we cannot reencode fast-import: support 'encoding' commit header t9350: fix encoding test to actually test reencoding