Move 8.2 release documentation into SGML.
Move 8.2 release documentation into SGML.

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