SAML2_Utils: Allow DOMDocument as parameter for xpQuery().
SAML2_Utils: Allow DOMDocument as parameter for xpQuery().

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2257 44740490-163a-0410-bde0-09ae8108e29a

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