SAML2_Utils: Handle NULL values in NameID.
SAML2_Utils: Handle NULL values in NameID.

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@1650 44740490-163a-0410-bde0-09ae8108e29a

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