Add comment on tilde expansion.
Add comment on tilde expansion.

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