SAML2_XML_md_Extensions: Fix namespaceURL => namespaceURI.
SAML2_XML_md_Extensions: Fix namespaceURL => namespaceURI.

Thanks to Georg Gollmann for reporting this bug.

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2963 44740490-163a-0410-bde0-09ae8108e29a

Kunstmaan/simplesamlphp,sitya/simplesamlphp,dnmvisser/simplesamlphp,simplesamlphp/simplesamlphp,cwaldbieser/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,sitya/simplesamlphp,grnet/simplesamlphp,ghalse/simplesamlphp,girgen/simplesamlphp,madmatt/simplesamlphp,jschlyter/simplesamlphp,shoaibali/simplesamlphp,sitya/simplesamlphp,jschlyter/simplesamlphp,Kunstmaan/simplesamlphp,grnet/simplesamlphp,gtkrug/simplesamlphp,sitya/simplesamlphp,dnmvisser/simplesamlphp,shoaibali/simplesamlphp,maytechnet/simplesamlphp,gtkrug/simplesamlphp,maytechnet/simplesamlphp,BrettMerrick/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,BrettMerrick/simplesamlphp,dzuelke/simplesamlphp,Kunstmaan/simplesamlphp,dzuelke/simplesamlphp,maytechnet/simplesamlphp,BrettMerrick/simplesamlphp,ghalse/simplesamlphp,dzuelke/simplesamlphp,girgen/simplesamlphp,madmatt/simplesamlphp,sylvainmed/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp,madmatt/simplesamlphp,cwaldbieser/simplesamlphp,shoaibali/simplesamlphp,dnmvisser/simplesamlphp,BrettMerrick/simplesamlphp,dialogik/simplesamlphp,ghalse/simplesamlphp,girgen/simplesamlphp,jschlyter/simplesamlphp,madmatt/simplesamlphp,gtkrug/simplesamlphp,ghalse/simplesamlphp,grnet/simplesamlphp,jschlyter/simplesamlphp,shoaibali/simplesamlphp,dialogik/simplesamlphp,maytechnet/simplesamlphp,dialogik/simplesamlphp,sylvainmed/simplesamlphp,simplesamlphp/simplesamlphp,girgen/simplesamlphp,dnmvisser/simplesamlphp,Kunstmaan/simplesamlphp,gtkrug/simplesamlphp,simplesamlphp/simplesamlphp,cwaldbieser/simplesamlphp,cwaldbieser/simplesamlphp,girgen/simplesamlphp,jschlyter/simplesamlphp,sylvainmed/simplesamlphp,sylvainmed/simplesamlphp,dzuelke/simplesamlphp,dialogik/simplesamlphp,dialogik/simplesamlphp,simplesamlphp/simplesamlphp,grnet/simplesamlphp,StudentLifeMarketingAndDesign/simplesamlphp