upgpkg: sdl2_mixer 2.0.0-3

Fix FS#38428

git-svn-id: file:///srv/repos/svn-packages/svn@207159 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to extra-i686, extra-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@207160 eb2447ed-0c53-47e4-bac8-5bc4a241df78