Log Message:
opusfile: Update to 0.11

Changes since the v0.10 release:

* Fix two potential integer overflows. (These were not security-critical unless \ 
the compiler took the opportunity provided by the undefined behavior to format \ 
your hard drive.)
* Allow JPEGs in METADATA_BLOCK_PICTURE tags to include EXIF data.
* A few warning fixes for gcc 8.
* Make opus_tags_copy return OP_EFAULT on failure instead of returning success.
* Various integration and testing environment improvements.

This release is backward-compatible with the previous release.
We recommend all users upgrade.