saml: Handle empty RelayState the same as missing RelayState.
saml: Handle empty RelayState the same as missing RelayState.

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2763 44740490-163a-0410-bde0-09ae8108e29a

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