Fix obsolete description of PGnotify struct.
Fix obsolete description of PGnotify struct.

tangp3/gpdb,ovr/postgres-xl,lintzc/gpdb,atris/gpdb,xuegang/gpdb,Chibin/gpdb,snaga/postgres-xl,rubikloud/gpdb,CraigHarris/gpdb,chrishajas/gpdb,tangp3/gpdb,zaksoup/gpdb,Quikling/gpdb,Postgres-XL/Postgres-XL,arcivanov/postgres-xl,50wu/gpdb,rubikloud/gpdb,postmind-net/postgres-xl,snaga/postgres-xl,janebeckman/gpdb,cjcjameson/gpdb,foyzur/gpdb,zeroae/postgres-xl,lpetrov-pivotal/gpdb,kmjungersen/PostgresXL,tpostgres-projects/tPostgres,rubikloud/gpdb,cjcjameson/gpdb,techdragon/Postgres-XL,rvs/gpdb,adam8157/gpdb,zaksoup/gpdb,jmcatamney/gpdb,randomtask1155/gpdb,adam8157/gpdb,yazun/postgres-xl,xuegang/gpdb,janebeckman/gpdb,0x0FFF/gpdb,0x0FFF/gpdb,techdragon/Postgres-XL,rubikloud/gpdb,zeroae/postgres-xl,kaknikhil/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,randomtask1155/gpdb,tpostgres-projects/tPostgres,ashwinstar/gpdb,janebeckman/gpdb,tpostgres-projects/tPostgres,lpetrov-pivotal/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,kaknikhil/gpdb,techdragon/Postgres-XL,yuanzhao/gpdb,greenplum-db/gpdb,xinzweb/gpdb,kaknikhil/gpdb,adam8157/gpdb,atris/gpdb,randomtask1155/gpdb,royc1/gpdb,ahachete/gpdb,lpetrov-pivotal/gpdb,rvs/gpdb,rvs/gpdb,yazun/postgres-xl,zeroae/postgres-xl,edespino/gpdb,randomtask1155/gpdb,rvs/gpdb,lpetrov-pivotal/gpdb,xinzweb/gpdb,adam8157/gpdb,oberstet/postgres-xl,oberstet/postgres-xl,greenplum-db/gpdb,Quikling/gpdb,xuegang/gpdb,lintzc/gpdb,greenplum-db/gpdb,50wu/gpdb,zaksoup/gpdb,cjcjameson/gpdb,xuegang/gpdb,lisakowen/gpdb,greenplum-db/gpdb,xinzweb/gpdb,adam8157/gpdb,royc1/gpdb,janebeckman/gpdb,Chibin/gpdb,foyzur/gpdb,Quikling/gpdb,foyzur/gpdb,yazun/postgres-xl,jmcatamney/gpdb,lpetrov-pivotal/gpdb,edespino/gpdb,postmind-net/postgres-xl,ashwinstar/gpdb,CraigHarris/gpdb,chrishajas/gpdb,foyzur/gpdb,lintzc/gpdb,Quikling/gpdb,royc1/gpdb,arcivanov/postgres-xl,janebeckman/gpdb,yuanzhao/gpdb,tangp3/gpdb,yazun/postgres-xl,Postgres-XL/Postgres-XL,arcivanov/postgres-xl,edespino/gpdb,atris/gpdb,greenplum-db/gpdb,edespino/gpdb,chrishajas/gpdb,tpostgres-projects/tPostgres,lintzc/gpdb,CraigHarris/gpdb,CraigHarris/gpdb,xuegang/gpdb,chrishajas/gpdb,Chibin/gpdb,arcivanov/postgres-xl,kmjungersen/PostgresXL,50wu/gpdb,oberstet/postgres-xl,Chibin/gpdb,Chibin/gpdb,xinzweb/gpdb,janebeckman/gpdb,xuegang/gpdb,lisakowen/gpdb,lpetrov-pivotal/gpdb,Postgres-XL/Postgres-XL,CraigHarris/gpdb,xinzweb/gpdb,randomtask1155/gpdb,Quikling/gpdb,zaksoup/gpdb,lintzc/gpdb,edespino/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,atris/gpdb,lisakowen/gpdb,snaga/postgres-xl,jmcatamney/gpdb,edespino/gpdb,lpetrov-pivotal/gpdb,edespino/gpdb,ovr/postgres-xl,rvs/gpdb,50wu/gpdb,jmcatamney/gpdb,zaksoup/gpdb,cjcjameson/gpdb,50wu/gpdb,tangp3/gpdb,janebeckman/gpdb,yuanzhao/gpdb,techdragon/Postgres-XL,pavanvd/postgres-xl,xinzweb/gpdb,edespino/gpdb,lisakowen/gpdb,ahachete/gpdb,rvs/gpdb,postmind-net/postgres-xl,postmind-net/postgres-xl,rubikloud/gpdb,CraigHarris/gpdb,rvs/gpdb,0x0FFF/gpdb,50wu/gpdb,atris/gpdb,foyzur/gpdb,lisakowen/gpdb,CraigHarris/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,Chibin/gpdb,randomtask1155/gpdb,rvs/gpdb,royc1/gpdb,tangp3/gpdb,xuegang/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,foyzur/gpdb,kaknikhil/gpdb,royc1/gpdb,cjcjameson/gpdb,cjcjameson/gpdb,rubikloud/gpdb,pavanvd/postgres-xl,royc1/gpdb,kaknikhil/gpdb,Chibin/gpdb,lintzc/gpdb,janebeckman/gpdb,Quikling/gpdb,ahachete/gpdb,ashwinstar/gpdb,lisakowen/gpdb,0x0FFF/gpdb,ovr/postgres-xl,ashwinstar/gpdb,0x0FFF/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,pavanvd/postgres-xl,Chibin/gpdb,greenplum-db/gpdb,ovr/postgres-xl,kaknikhil/gpdb,jmcatamney/gpdb,chrishajas/gpdb,techdragon/Postgres-XL,greenplum-db/gpdb,rvs/gpdb,atris/gpdb,ahachete/gpdb,postmind-net/postgres-xl,royc1/gpdb,zaksoup/gpdb,tangp3/gpdb,cjcjameson/gpdb,kaknikhil/gpdb,ahachete/gpdb,50wu/gpdb,ashwinstar/gpdb,Quikling/gpdb,pavanvd/postgres-xl,xinzweb/gpdb,0x0FFF/gpdb,arcivanov/postgres-xl,chrishajas/gpdb,ovr/postgres-xl,lpetrov-pivotal/gpdb,edespino/gpdb,oberstet/postgres-xl,chrishajas/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,kmjungersen/PostgresXL,kmjungersen/PostgresXL,cjcjameson/gpdb,xuegang/gpdb,atris/gpdb,Quikling/gpdb,rubikloud/gpdb,atris/gpdb,Postgres-XL/Postgres-XL,lintzc/gpdb,foyzur/gpdb,yuanzhao/gpdb,lintzc/gpdb,tangp3/gpdb,lisakowen/gpdb,randomtask1155/gpdb,ahachete/gpdb,chrishajas/gpdb,kmjungersen/PostgresXL,zeroae/postgres-xl,rvs/gpdb,Chibin/gpdb,pavanvd/postgres-xl,yuanzhao/gpdb,royc1/gpdb,snaga/postgres-xl,tangp3/gpdb,kaknikhil/gpdb,janebeckman/gpdb,cjcjameson/gpdb,ahachete/gpdb,foyzur/gpdb,lisakowen/gpdb,ahachete/gpdb,snaga/postgres-xl,ashwinstar/gpdb,CraigHarris/gpdb,janebeckman/gpdb,xinzweb/gpdb,rubikloud/gpdb,yazun/postgres-xl,adam8157/gpdb,kaknikhil/gpdb,50wu/gpdb,zaksoup/gpdb,randomtask1155/gpdb,Quikling/gpdb,0x0FFF/gpdb,adam8157/gpdb,zeroae/postgres-xl,Postgres-XL/Postgres-XL,kaknikhil/gpdb,lintzc/gpdb,0x0FFF/gpdb,zaksoup/gpdb,CraigHarris/gpdb,adam8157/gpdb,edespino/gpdb,yuanzhao/gpdb,Quikling/gpdb,xuegang/gpdb