separate a add_docbat() MIL proc from the add_doc() proc.
separate a add_docbat() MIL proc from the add_doc() proc.

The new proc will be used by the SOAP implementation to add
shredded messages to the working set.

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