updates available

[iyzsong]

Hello, you may want to update onscripter_libretro and onsyuri_libretro to its latest version, which should fix:

• font rendering in onscripter_libretro, due to stb_truetype, switched back to freetype
• audio stuttering, changed to use threaded audio and fifo buffer
• LUA supported added for onsyuri_libretro

You can report bugs to me here or in their upstream repos, thanks.

[weimingtom]

OK, I will merge this later, it's not my hard, all is your contribution