Trim down environment variable instructions for Win32, backpatch to 8.2.X.
Trim down environment variable instructions for Win32, backpatch to 8.2.X.

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