Add libpgport to postgres.def for Windows build.  Per Magnus Hagander.
Add libpgport to postgres.def for Windows build.  Per Magnus Hagander.

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