This repeats the same change in the pricing addin as already carried out
in datefunc.

This type was a special case of a custom implemented list, and wasused
like a map. I have replaced it with a std::map typedef'd as
ScaFuncDataMap.

Since the map key also exists in the value object, there are more
memory-efficient ways to implement this with a vector and a predicate
functor for searching at the cost of some code complexity. I opted for
the simpler code afforded by using a std::map implementation.

Change-Id: I7d28e0bc58f713cf4f4e962302e09788b3ac4218
Reviewed-on: https://gerrit.libreoffice.org/17651Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>