Update COPY BINARY file format spec to reflect recent decisions about external representation of binary data.
Update COPY BINARY file format spec to reflect recent decisions about
external representation of binary data.

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