Fix typmod interpretation for bit types.  (It was erroneously assumed that for bit(x), the typmod stores x+4, like for the character types.)
Fix typmod interpretation for bit types.  (It was erroneously assumed that
for bit(x), the typmod stores x+4, like for the character types.)

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