fix for bug 3593. When we move the insert bats into the bid slot we should set the ibase.
fix for bug 3593. When we move the insert bats into the bid slot we should
set the ibase.

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