add more ODFF v1.2 functions to calc

[Winfried Donkers]

Hi Regina,

> 
> I'm not aware, that any LEGACY.XXX function is missing. FDIST (the new
> one) is still missing, because there is still no decision how to handle
> incompatibility with older documents and versions. Remember, that the
> ODF1.2 spec contains the function names for the file format, not the function
> names in the UI.
> 

You are right, I checked the wrong way round.
Well, I'll just hunt for other missing functions, I think there are still some in the 'Large' group.
(Small and Medium group look complete to me)

Winfried