Refactor compressed module depack

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Fix handling of depacking errors

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Add MUSE depacking test for MOD2J2B

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>