[bugfix] Made error more readable when jetty port cannot be claimed.
[bugfix] Made error more readable when jetty port cannot be claimed.

svn path=/trunk/eXist/; revision=8617

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