Update for libADLMIDI and libOPNMIDI

[Wohlstand]

Some time ago I released new stable versions for libADLMIDI and libOPNMIDI and forgot to send these updates to GZDoom. At least, I fixed a few bugs on them until send them to you.

One last thing is left: add new options listed in changelogs to the config itself

libADLMIDI Changelog

• Added an ability to disable the automatical arpeggio
• Added an ability to set the count of loops (how many times to play the song)
• Added an ability to disable/enable the playing of selected MIDI channels
• Fixed memory damages and crashes while playing XMI files
• Added bank-specific MT32 defaults (to don't confuse XMI playback between different games, works for AIL and IBK only, and for WOPL if set at the header)
• Added the chip channels allocation mode option
• Fixed the playback of multi-song XMI files
• Added an ability to switch the XMI song on the fly

ALSO (future updates)

• Fixed the work on big-endian processors
• Fixed ARM64 build on some platforms
• Improved support of the EA-MUS files (Thanks to dashodanger)
• Fixed crash on an attempt to change the volume of a blank note

libOPNMIDI Changelog:

• Added an ability to disable the automatical arpeggio
• Updated the GENS chip emulator from the 2.10 into GS/II (thanks to @freq-mod for the help)
• Added an ability to set the number of loops
• Added an ability to disable/enable the playing of selected MIDI channels
• Fixed memory damages and crashes while playing XMI files
• Added the chip channels allocation mode option
• Fixed the playback of multi-song XMI files
• Added an ability to switch the XMI song on the fly

And also:

• Fixed the work on big-endian processors
• Fixed ARM64 build on some platforms
• Improved support of the EA-MUS files (Thanks to dashodanger)
• Fixed crash on an attempt to change the volume of a blank note