Add .h to string include.
Add .h to string include.

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