STRINGSPACE_BLOCK
ss->stringspace = solv_extend_resize(ss->stringspace, ss->sstrings + len + 1, 1, STRINGSPACE_BLOCK);
ss->stringspace = solv_extend(ss->stringspace, ss->sstrings, len + 1, 1, STRINGSPACE_BLOCK);
ss->stringspace = solv_extend_resize(ss->stringspace, ss->sstrings, 1, STRINGSPACE_BLOCK);
ss->stringspace = solv_extend_resize(0, totalsize, 1, STRINGSPACE_BLOCK);
ss->stringspace = solv_extend_resize(0, from->sstrings, 1, STRINGSPACE_BLOCK);