fixed problem with in lists with constants on the left hand side. Fixes Bug 2921
fixed problem with in lists with constants on the left hand side.
Fixes Bug 2921

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