taking Rich review into account:
* define a Slapi_Vattr typedef
* improve slapi_entry_vattrcache_merge_sv so that it does not crash
when merging a valueset to an already cached vattr that have NULL
value (vattr->attr == NULL)
https://fedorahosted.org/389/attachment/ticket/512/0007-Ticket-512-improv...
https://fedorahosted.org/389/ticket/512