Update migration changes, more cleanups.
Update migration changes, more cleanups.

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