Go back to emitting path names with forward slashes on Windows. I'm not clear on what the double-backslash idea was intended to fix, but it breaks at least mingw GNU Make.  Per report from Thomas Hallgren.
Go back to emitting path names with forward slashes on Windows.
I'm not clear on what the double-backslash idea was intended to fix,
but it breaks at least mingw GNU Make.  Per report from Thomas Hallgren.

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