Update info on source files for v6.4. Should add/change ToDo list some more before release...
Update info on source files for v6.4.
Should add/change ToDo list some more before release...

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