df#50950 sort out Calc (ISO)WEEKNUM functions

[Winfried Donkers]

Hi Eike,

> As odffmap.cxx could not be used for that, I hacked up a solution
> committed with
> https://gerrit.libreoffice.org/gitweb?p=core.git;a=commitdiff;h=74010f1c50
> 2a4bd7eb1ef3ee3d0e8c45a1c9afee

I noticed, great you've found a solution :) 
 
> We can reuse that approach for further Add-In UI display name changes if
> needed.

Yes, I will have a look at this approach and see if GCD_ADD and LCM_ADD can have their names changed too (disabling the tooltips/listing in the function wizard hasn't been successful so far).

Winfried