In module sc classes FuncData and FuncCollection are used for
legacy binary AddIn functions. In module scaddins also exist
classes FuncData. This can be confusing, so the classes and relevant
members/variables have been renamed in module sc.

Change-Id: Ib0700ed1177b760a4d46312b8578ca8b55882c53
Reviewed-on: https://gerrit.libreoffice.org/17670Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>