Update to libdjinterop 0.16.0

[mr-smidge]

Update to use libdjinterop 0.16.0

• Provides support for Denon firmware 1.6.x (current latest version)
• Populates a few fields that were not previously set
• Addresses a FIXME left in recent PR EnginePrimeExportJob: Use mixxx::audio::FramePos internally #4077

After this PR is merged, the 0.16.0 Ubuntu packages of libdjinterop ought to be copied into the Mixxx PPA, in order for Ubuntu builds to work with the newer code.

[coveralls]

Pull Request Test Coverage Report for Build 1063482444

• 0 of 5 (0.0%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.01%) to 28.611%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/library/export/engineprimeexportjob.cpp	0	5	0.0%

Files with Coverage Reduction	New Missed Lines	%
src/engine/cachingreader/cachingreader.cpp	1	74.64%
src/engine/cachingreader/cachingreaderworker.cpp	2	63.48%

Totals
Change from base Build 1062712933:	0.01%
Covered Lines:	20083
Relevant Lines:	70193

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💛 - Coveralls

[uklotzde]

Thank you! LGTM