Larson-Miller inverse tabular lookup does not correctly detect interval.

When the Larson-Miller Parameter (LMP) is provided in a tabular form, as a function of stress, AFFTAC must perform an inverse lookup during calculations, where the model computes LMP and the table must provide stress. There appears to be a bug in the search for the interval containing the given LMP value, the bug being that the search expects the ordinate to be increasing in value w.r.t. the abscissa. Thus, the default is to extrapolate off the end of the table, which will be incorrect when the LMP is actually within the table bounds.

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