Add string.h for strerror() prototype
Add string.h for strerror() prototype

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