Fix for IdP-first flow logout (issue 397).
Fix for IdP-first flow logout (issue 397).

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2839 44740490-163a-0410-bde0-09ae8108e29a

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