[VBA] Logarithm of base 10

https://github.com/walter426/VbaUtilities/blob/master/MathUtilities.bas

As there is not built-in function for logarithm of base 10, so it is required to build it from the default natural  Logarithm function in VBA

Public Function Log10(X)
    Log10 = Log(X) / Log(10#)
End Function