Definition
When the crystallographic axes have been defined, the axial ratios are calculated from the
crystallographic parameters as follows:
Function AxialRatios(A, B, C, labela, labelb, labelc)
' Calculates the axial ratios from unit cell dimensions.
' A:B:C B=1 (A=A/B) (C=C/B)
' A:B A=1 (B=B/A)
' From Mason, 1963