Add mention of why -lpgport is needed in ecpglib (dllwrap).
Add mention of why -lpgport is needed in ecpglib (dllwrap).

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