- further fixes of inccorect overflow errors for int (and long on LLP64 systems) * prev commit had bugs * added overflow tests for also int, long, long long (for both, lp64 and llp64) - while at it, fixing a reference leak when not using python with utf8 caching

useDynLib(rdc)
export(
	rdcLoad,rdcFree,rdcFind,rdcCall,
	rdcPath,rdcUnpath,rdcShowPath,
	rdcUnpack1,rdcDataPtr,rdcSizeOf,
	rdcBind,
	rdcMode,
	dcNewCallVM, dcCall, dcMode
)