Fix miscalculation of remaining free space during tuple chain moving. Only affects machines where MAXALIGN > 4, and is a boundary-condition case even there, but still surprising that it's not been identified before.  Also reduce tuple chain move give-up messages from WARNING to DEBUG1, since they are not unexpected conditions.
Fix miscalculation of remaining free space during tuple chain moving.
Only affects machines where MAXALIGN > 4, and is a boundary-condition
case even there, but still surprising that it's not been identified
before.  Also reduce tuple chain move give-up messages from WARNING
to DEBUG1, since they are not unexpected conditions.

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