Add uthash to create better cache for Arduino VM.
Add uthash to create better cache for Arduino VM.

crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language,crcx/retro-language