Remove dubious and redundant (we think) setting of libdir in PATH for non temp-install case.
Remove dubious and redundant (we think) setting of libdir in PATH for non temp-install case.

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