STRING_BLOCK
ss->stringhashmask = hashmask = mkmask(ss->nstrings + STRING_BLOCK);
ss->strings = solv_extend_resize(ss->strings, ss->nstrings + 1, sizeof(Offset), STRING_BLOCK);
ss->strings = solv_extend(ss->strings, id, 1, sizeof(Offset), STRING_BLOCK);
ss->strings = solv_extend_resize(ss->strings, ss->nstrings, sizeof(Offset), STRING_BLOCK);
ss->strings = solv_extend_resize(0, count, sizeof(Offset), STRING_BLOCK);
ss->strings = solv_extend_resize(0, from->nstrings, sizeof(Offset), STRING_BLOCK);