Fix initdb to properly escape quotes and backslashes in the supplied superuser password, and also in the paths of the various files it issues SQL COPY commands for.  Per bug #2424.
Fix initdb to properly escape quotes and backslashes in the supplied
superuser password, and also in the paths of the various files it issues
SQL COPY commands for.  Per bug #2424.

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