Linearized momentum tensor eigenvalues and eigenvectors

Same as QJEIG except that a different normalization is used. The momentum tensor for this calculation is defined as

$${1\over P} \sum_{i}^{} {{p_{{ji}}p_{{ki}}}\over {p_{i}}}$$ (1)

j, k = 1, 2, 3 (2)

Input arguments and results are as described for QJEIG.