reverted Peter's yesterday's change: we do still need twig; hence, configure does still need to check whether twig is available.
reverted Peter's yesterday's change: we do still need twig;
hence, configure does still need to check whether twig is available.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb