libpq++ cleanup from Vince Vielhaber
libpq++ cleanup from Vince Vielhaber

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