core:GenerateGroups: Fix use of "/e" preg_replace modifier.
core:GenerateGroups: Fix use of "/e" preg_replace modifier.

See: https://wiki.php.net/rfc/remove_preg_replace_eval_modifier

Thanks to Thijs Kinkhorst for providing this patch!

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@3223 44740490-163a-0410-bde0-09ae8108e29a

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