made writeMatrix actually write integers if argument passed, previously there was mistake in control structure. made sigCorrMatrix in writeChubukov, so that old logical selection on corrMatrix would not make 1-D array. made makeCorrMatrix put a zero if one row has all same entries, else a NaN results. made renameInputFiles rm old versions of all input files except input.txt (actually, is that necessary since we're copying over?). Added a real minValue and minIdx check to bp_calculations