Added note that multilib GCC is required when building the native version on 64 bit Linux (#66)
Added note that multilib GCC is required when building the native version on 64 bit Linux (#66)

Without a GCC installation that can build both 32 and 64 bit executables, the native build will fail on 64 bit Linux machines with an error about unsigned __int128 being undefined. GCC does not support __int128 on 32 bit targets, and GCC was using it via a standard library implementation header intended for 64 bit machines.

Instances of "arm" were replaced with "ARM" where the acronym was intended.
wpilibsuite/ntcore,robotdotnet/ntcore,333fred/ntcore,333fred/ntcore,333fred/ntcore,robotdotnet/ntcore,wpilibsuite/ntcore,333fred/ntcore,wpilibsuite/ntcore,robotdotnet/ntcore,wpilibsuite/ntcore,robotdotnet/ntcore