Update FAQ.
Update FAQ.

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