Document genbki.sh's ability to auto-assign OIDs for DESCR macros. Some other minor wording improvements.
Document genbki.sh's ability to auto-assign OIDs for DESCR macros.
Some other minor wording improvements.

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