Removed code to rename "core" files to something unique.  This was never meant to be checked in.  :-)
Removed code to rename "core" files to something unique.  This was
never meant to be checked in.  :-)

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