QuantLibXL 0.3.8

[Ferdinando Ametrano-3]

QuantLibXL 0.3.8 has been released today: no big changes, it's just in
synch with QuantLib 0.3.8
Hopefully 0.3.9 will see *many* changes

This completes the 0.3.8 "QL suite" release

ciao -- Nando