3DS: Reload screen mode and improve screen cleanup (fixes #127)
3DS: Reload screen mode and improve screen cleanup (fixes #127)

jeremyherbert/mgba,MerryMage/mgba,Anty-Lemon/mgba,Iniquitatis/mgba,fr500/mgba,sergiobenrocha2/mgba,libretro/mgba,libretro/mgba,fr500/mgba,jeremyherbert/mgba,sergiobenrocha2/mgba,sergiobenrocha2/mgba,mgba-emu/mgba,askotx/mgba,MerryMage/mgba,askotx/mgba,askotx/mgba,iracigt/mgba,jeremyherbert/mgba,AdmiralCurtiss/mgba,Touched/mgba,iracigt/mgba,iracigt/mgba,mgba-emu/mgba,askotx/mgba,mgba-emu/mgba,MerryMage/mgba,Touched/mgba,Anty-Lemon/mgba,libretro/mgba,Touched/mgba,cassos/mgba,libretro/mgba,sergiobenrocha2/mgba,sergiobenrocha2/mgba,fr500/mgba,iracigt/mgba,libretro/mgba,AdmiralCurtiss/mgba,jeremyherbert/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,fr500/mgba,cassos/mgba,mgba-emu/mgba,Anty-Lemon/mgba,cassos/mgba,Iniquitatis/mgba,Iniquitatis/mgba,AdmiralCurtiss/mgba