emscripten: Introduce SDL_HINT_EMSCRIPTEN_ASYNCIFY

See https://github.com/emscripten-core/emscripten/issues/10746

and

https://github.com/emscripten-ports/SDL2/pull/112

Fixes Bugzilla #4997.

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extra : histedit_source : f9552ea393d4b3752a23c237a6e75cde2b4d5fa9
4 files changed