update saving of field mappings, allow sharing data among processes
update saving of field mappings, allow sharing data among processes

rc/sfepy,vlukes/sfepy,BubuLK/sfepy,sfepy/sfepy,BubuLK/sfepy,BubuLK/sfepy,lokik/sfepy,lokik/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,vlukes/sfepy,sfepy/sfepy,lokik/sfepy,lokik/sfepy,sfepy/sfepy