[feature] changed util:parse function to return an XML fragment with an error description if the parsing fails.
[feature] changed util:parse function to return an XML fragment with an error description if the parsing fails.

svn path=/trunk/eXist/; revision=14620

adamretter/exist,hungerburg/exist,dizzzz/exist,dizzzz/exist,zwobit/exist,wshager/exist,olvidalo/exist,wolfgangmm/exist,ambs/exist,shabanovd/exist,ambs/exist,ljo/exist,adamretter/exist,MjAbuz/exist,windauer/exist,RemiKoutcherawy/exist,opax/exist,eXist-db/exist,jessealama/exist,MjAbuz/exist,jessealama/exist,RemiKoutcherawy/exist,ambs/exist,eXist-db/exist,lcahlander/exist,wshager/exist,shabanovd/exist,patczar/exist,patczar/exist,dizzzz/exist,zwobit/exist,wshager/exist,zwobit/exist,zwobit/exist,jensopetersen/exist,RemiKoutcherawy/exist,lcahlander/exist,RemiKoutcherawy/exist,opax/exist,shabanovd/exist,olvidalo/exist,hungerburg/exist,dizzzz/exist,kohsah/exist,jensopetersen/exist,ljo/exist,ljo/exist,wolfgangmm/exist,eXist-db/exist,dizzzz/exist,zwobit/exist,windauer/exist,wolfgangmm/exist,olvidalo/exist,joewiz/exist,jessealama/exist,adamretter/exist,kohsah/exist,patczar/exist,ljo/exist,eXist-db/exist,patczar/exist,dizzzz/exist,kohsah/exist,hungerburg/exist,MjAbuz/exist,adamretter/exist,jensopetersen/exist,RemiKoutcherawy/exist,RemiKoutcherawy/exist,eXist-db/exist,ambs/exist,wshager/exist,opax/exist,wolfgangmm/exist,lcahlander/exist,eXist-db/exist,hungerburg/exist,MjAbuz/exist,olvidalo/exist,windauer/exist,wolfgangmm/exist,adamretter/exist,MjAbuz/exist,kohsah/exist,joewiz/exist,shabanovd/exist,wolfgangmm/exist,patczar/exist,lcahlander/exist,wshager/exist,shabanovd/exist,ljo/exist,shabanovd/exist,joewiz/exist,jensopetersen/exist,ljo/exist,hungerburg/exist,opax/exist,jessealama/exist,windauer/exist,jensopetersen/exist,wshager/exist,lcahlander/exist,olvidalo/exist,jessealama/exist,kohsah/exist,joewiz/exist,MjAbuz/exist,jessealama/exist,ambs/exist,joewiz/exist,zwobit/exist,jensopetersen/exist,windauer/exist,kohsah/exist,patczar/exist,ambs/exist,opax/exist,joewiz/exist,adamretter/exist,lcahlander/exist,windauer/exist