Revise shmget() and semget() failure messages to mention the possibility of coping by reducing shared_buffers/max_connections settings.
Revise shmget() and semget() failure messages to mention the possibility
of coping by reducing shared_buffers/max_connections settings.

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