[PRQ#42530] Merge Request for sdl2_compat12-git

MarsSeed [1] filed a request to merge sdl2_compat12-git [2] into sdl12-compat-git [3]: Target package aligns with Arch repo's naming of this, and also upstream's name. Also target target package seems to be maintained as well. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/sdl2_compat12-git/ [3] https://aur.archlinux.org/pkgbase/sdl12-compat-git/