Clarify macro layout for win32 IMPORT.
Clarify macro layout for win32 IMPORT.

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