Bug in bit(x) macro

In objectTypes.h, the bit(x) macro should be fixed for use with U64 data. Otherwise it propagates a sign bit into the result when x>31.

Replace

#define bit(x) (1 << (x))

with

#define bit(x) ((unsigned)1 << (x))

Edit: In fact, I wound up using this to get it to work for 64-bit data:

#define bit(x) (((x)>31) ? ((unsigned)1<<((x)-32))*0x100000000 : ((unsigned)1<<(x)))