Series dot method is not working correctly
> > import pandas
> > ts1 = pandas.Series({'b':0., 'a':2.})
> > ts2 = pandas.Series({'b':2., 'a':0.}).reindex(['b', 'a'])
> > print ts1.dot(ts2)

4.0

the dot product should be 0.0 not 4.0.

vishy
