update media-sound/vgmplay to 0.40.9

[ValleyBell]

I kept the 0.40.8 ebuild and restored the 0.40.7 ebuild as well, because I didn't see a reason for removing it.

With VGMPlay 0.40.9, I changed the Makefile again, now setting the options works as it should.

I also tried to clear up the license confusion a bit. (It's not like that makes it any better though.)

[leycec]

Oh, man. Thank you so nostalgically much for this. I love VGMPlay in various ways that I probably shouldn't. As it's my 49^th birthday tomorrow (...gulp), I'll be hogtied for the next several days. Assuming I don't come down with a "bad case of the Mondays," I'll giddily merge this in early next week.

You rock, @ValleyBell. 🎶 🎧

[leycec]

Looks awesome, as expected. I mildly regret my caustic commentary concerning licensing. I was quite frustrated at the time and... well, I didn't think anyone would ever actually read my ebuilds. They did. Now, I too feel public shame.

Thanks for helping to clarify VGMPlay's licensing conundrum a bit, bumping the release, installing correct documentation, and substantially improving our use of USE flags. For pointless edification, note that command-line options may be efficiently defined from USE flags via the EAPI 5 usex function: e.g.,

# Instead of this...
use opl  && VGMPLAY_MAKE_OPTIONS+=( DISABLE_HWOPL_SUPPORT=0 ) || VGMPLAY_MAKE_OPTIONS+=( DISABLE_HWOPL_SUPPORT=1 )

# ...just do this! ;()
VGMPLAY_MAKE_OPTIONS+=( DISABLE_HWOPL_SUPPORT=$(usex opl 0 1) )

Sweet, eh? And don't sweat those pedantic details. I'll patch that up for you after the merger. Let's do this!

[ValleyBell]

Ohh, that usex function is indeed awesome!
Thanks for merging.