Add tests to enlargeStringInfo() to avoid possible buffer-overrun or infinite-loop problems if a bogus data length is passed.
Add tests to enlargeStringInfo() to avoid possible buffer-overrun or
infinite-loop problems if a bogus data length is passed.

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