remove typedef OratclSubs and member sub_list from OratclStms.
fix ckalloc/ckfree on NULL values
actually remove OMV_null
remove global Tcl_Obj OMV_null.
whitespace
adjust test list and add some debugging output at the end
more test cleanup
minor cleanup
change MEM dump to occur only for non-windows to /tmp/oratcl_memdump
remove unused tListObjType
