Update man pages.
Update man pages.

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