Mention createlang when language not installed, per problem report.
Mention createlang when language not installed, per problem report.

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