Notice if lengths of bumps, temps, or vibs changes in analyze_all.

Notice if lengths of bumps, temps, or vibs changes in analyze_all.

For example, if a vibration has a wierd jump that throws off the
average, you can move that vibration from, say, 'vibration/12' to
'vibration/-1'.  This saves the data, but does not use it to calculate
the spring constant.

With the old logic, the shortened array of variances wasn't saved over
the old ones, because none of the analysis for an individual vibration
had changed.