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What this PR does / why we need it:
io.Reader
was used for 2 things, buffers and files. Buffers were fine, but were obfuscated as to when a buffer was used or a file. Additionally leaving as a Reader left the opportunity for future confusion. It is now a byte.Buffer. In the one case where a file was passed the file is read to buffer.This fixes this comment: // FIXME: Implement 'io.Closer' and make sure that it is called. 'tarPackage' will leak a file descriptor otherwise.
Additionally the hastily merged refactor of bundle left confusing variables in places which are resolved.
tests were modified for changes
clog used in places for verbose logging
refactored method names to match changes