Keep the key property a bit longer when appending to a BAT. If we're appending the second value to a BAT, and the value is smaller than the first, indicate that the column is reverse sorted and keep the key property.
Keep the key property a bit longer when appending to a BAT.
If we're appending the second value to a BAT, and the value is smaller
than the first, indicate that the column is reverse sorted and keep
the key property.

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