[bugfix] small fix to XSLTServlet to handle xmldb:exist: URIs correctly.
[bugfix] small fix to XSLTServlet to handle xmldb:exist: URIs correctly.

svn path=/trunk/eXist/; revision=14186

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