Fix for !(expr1 & expr2) and hasnull logic in slot_getatrr codegen.
Fix for !(expr1 & expr2) and hasnull logic in slot_getatrr codegen.

adam8157/gpdb,cjcjameson/gpdb,50wu/gpdb,lintzc/gpdb,yuanzhao/gpdb,50wu/gpdb,greenplum-db/gpdb,janebeckman/gpdb,rvs/gpdb,Chibin/gpdb,janebeckman/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,Chibin/gpdb,edespino/gpdb,lisakowen/gpdb,Quikling/gpdb,greenplum-db/gpdb,Chibin/gpdb,Quikling/gpdb,Chibin/gpdb,50wu/gpdb,janebeckman/gpdb,jmcatamney/gpdb,xinzweb/gpdb,lisakowen/gpdb,ashwinstar/gpdb,janebeckman/gpdb,jmcatamney/gpdb,xinzweb/gpdb,edespino/gpdb,lintzc/gpdb,ashwinstar/gpdb,adam8157/gpdb,Chibin/gpdb,xinzweb/gpdb,50wu/gpdb,adam8157/gpdb,50wu/gpdb,rvs/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,lintzc/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,rvs/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,lintzc/gpdb,jmcatamney/gpdb,janebeckman/gpdb,ashwinstar/gpdb,edespino/gpdb,cjcjameson/gpdb,edespino/gpdb,cjcjameson/gpdb,edespino/gpdb,rvs/gpdb,lintzc/gpdb,jmcatamney/gpdb,Quikling/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,adam8157/gpdb,adam8157/gpdb,lisakowen/gpdb,janebeckman/gpdb,rvs/gpdb,yuanzhao/gpdb,lintzc/gpdb,edespino/gpdb,adam8157/gpdb,xinzweb/gpdb,jmcatamney/gpdb,kaknikhil/gpdb,jmcatamney/gpdb,rvs/gpdb,lintzc/gpdb,lintzc/gpdb,kaknikhil/gpdb,Chibin/gpdb,greenplum-db/gpdb,adam8157/gpdb,Quikling/gpdb,jmcatamney/gpdb,janebeckman/gpdb,Quikling/gpdb,50wu/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,Chibin/gpdb,janebeckman/gpdb,yuanzhao/gpdb,Quikling/gpdb,greenplum-db/gpdb,rvs/gpdb,lintzc/gpdb,ashwinstar/gpdb,lisakowen/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,cjcjameson/gpdb,adam8157/gpdb,Chibin/gpdb,Chibin/gpdb,Quikling/gpdb,ashwinstar/gpdb,xinzweb/gpdb,xinzweb/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,lisakowen/gpdb,lisakowen/gpdb,edespino/gpdb,Quikling/gpdb,edespino/gpdb,Quikling/gpdb,kaknikhil/gpdb,rvs/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,xinzweb/gpdb,rvs/gpdb,ashwinstar/gpdb,50wu/gpdb,Chibin/gpdb,ashwinstar/gpdb,edespino/gpdb,xinzweb/gpdb,lisakowen/gpdb,rvs/gpdb,yuanzhao/gpdb,50wu/gpdb,cjcjameson/gpdb,janebeckman/gpdb,kaknikhil/gpdb,janebeckman/gpdb,yuanzhao/gpdb,edespino/gpdb,kaknikhil/gpdb,Quikling/gpdb,lisakowen/gpdb