dcp_inspect: get_xml_of_type, xml.root check
dcp_inspect: Fix typo
dcp_inspect: Comment wrt CMA
dcp_inspect: Report empty AnnotationText
dcp_inspect: Keep elapsed time for hash checks in log
dcp_inspect: Comment wrt no meta / encryption
dcp_inspect: Use File#write instead of the File#open idiom
dcp_inspect: Bump version (cherry-picks from fixfax)