Utilities: Updated addURLparameter to merge the new query string with the old query string.
Utilities: Updated addURLparameter to merge the new query string with the old query string.

This should fix a problem where one can end up with multiple parameters with
the same name in the query string. This patch also changes the $parameter of
addURLparameter to be an associative array. For backwards compatibility it can
still be a string.


git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@739 44740490-163a-0410-bde0-09ae8108e29a

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