Add opusfile-dev and libopusenc-dev to makedepends.

As of v0.2 the Opus decoder opusdec has been converted to use the
opusfile library, and the Opus encoder opusenc has been converted to use
the libopusenc library.

Most of these updates is based on data from https://repology.org/,
detection based on permanent redirect from http:// to https://.

$source urls are updated when they contain $url as substring.

This release includes several bug fixes, including security fixes in
opusenc, as well as a few minor enhancements.  Changes include:
* opusenc: Improved handling of malformed input files to avoid crashes
    and other troublesome behavior
* opusenc: Percent progress is shown while encoding
* opusrtp: New --extract option to extract from input pcap file
* New project files for building with Microsoft Visual Studio

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libteam
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modemmanager
namecoin
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