Switched to cdecl for mouse down.
add climate_update_sound
Merge branch 'c_based_mouse_down' of https://github.com/duncanspumpkin/OpenRCT2 into duncanspumpkin-c_based_mouse_down
Merge branch 'duncanspumpkin-c_based_mouse_down'
fix ASM for MinGW
Merge branch 'anyc-testing'