Espruino 32 bit int switch

@DrAzzy - thanks for doing the builds too! I'll try and get my system sorted today.

Just a thought, but for storing the data, what about:

var bits = [0,0];
if (bit_is_set)
 bits[bit_number>>5] |= 1<<(bit_number&5);

It should be relatively efficient. It's just slightly harder to get the data out at the other end if it crosses the boundary between two ints.