Restore mimetype name for *.bz2 and *.tar.bz2
Use bzip1 for (these days rarely used) *.bz files
This preserves source compatiblity for code that was using application/x-bzip-compressed-tar to detect tar.bz2 files.
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Use bzip1 for (these days rarely used) *.bz files
This preserves source compatiblity for code that was using application/x-bzip-compressed-tar to detect tar.bz2 files.