Made stream_write consistently return the count if the element size equals zero.  Documented this behavior in a comment.
Made stream_write consistently return the count if the element size
equals zero.  Documented this behavior in a comment.

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