[PRQ#72917] Merge Request for stepmania-git

ApertureUA [1] filed a request to merge stepmania-git [2] into stepmania [3]: They both attempt to build from trunk. Also, the -git package is currently broken because Cmake 3.5 support needs a flag now. [1] https://aur.archlinux.org/account/ApertureUA/ [2] https://aur.archlinux.org/pkgbase/stepmania-git/ [3] https://aur.archlinux.org/pkgbase/stepmania/