Memcache: Add $expire parameter to set().
Memcache: Add $expire parameter to set().

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2488 44740490-163a-0410-bde0-09ae8108e29a

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