When select is the hotkey, can't add coin in some games

[dankcushions]

This seems to be same issue as libretro/mame2000-libretro#9

• When P1's 'insert coin' button is the same as 'hotkey', it will not work, but only in some games. If you use P2's 'insert coin', or bind it to another key (or bind the hotkey), it works.

Eg, games that have this issue:
'88 Games
Street Fighter 2: Hyper Fighting

Games that don't:
Street Fighter III: 3rd strike
Final Fight

There's some more discussion and examples on this issue here: http://blog.petrockblock.com/forums/topic/fba-retroarch-core-coin-controls/

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

[joolswills]

Also affects mame2003-libretro libretro/mame2003-libretro#8

[dankcushions]

This is resolved for Retropie users in patch RetroPie/RetroPie-Setup#1278
The same or similar fix would need to applied to Retroarch to resolve this issue.