Make pg_dumpall build with the right object files under MSVC.
Make pg_dumpall build with the right object files under MSVC.

This fixes a longstanding but up to now benign bug in the way pg_dumpall
was built. The bug was exposed by recent code adjustments. The Makefile
does not use $(OBJS) to build pg_dumpall, so this fix removes their source
files from the pg_dumpall object and adds in the one source file it
consequently needs.

postmind-net/postgres-xl,ovr/postgres-xl,Postgres-XL/Postgres-XL,adam8157/gpdb,kmjungersen/PostgresXL,adam8157/gpdb,tpostgres-projects/tPostgres,adam8157/gpdb,50wu/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,xinzweb/gpdb,arcivanov/postgres-xl,greenplum-db/gpdb,jmcatamney/gpdb,oberstet/postgres-xl,techdragon/Postgres-XL,tpostgres-projects/tPostgres,snaga/postgres-xl,pavanvd/postgres-xl,oberstet/postgres-xl,jmcatamney/gpdb,snaga/postgres-xl,tpostgres-projects/tPostgres,xinzweb/gpdb,xinzweb/gpdb,greenplum-db/gpdb,techdragon/Postgres-XL,tpostgres-projects/tPostgres,adam8157/gpdb,postmind-net/postgres-xl,postmind-net/postgres-xl,yazun/postgres-xl,techdragon/Postgres-XL,adam8157/gpdb,arcivanov/postgres-xl,adam8157/gpdb,arcivanov/postgres-xl,50wu/gpdb,snaga/postgres-xl,jmcatamney/gpdb,jmcatamney/gpdb,ovr/postgres-xl,lisakowen/gpdb,arcivanov/postgres-xl,yazun/postgres-xl,kmjungersen/PostgresXL,zeroae/postgres-xl,jmcatamney/gpdb,lisakowen/gpdb,snaga/postgres-xl,greenplum-db/gpdb,oberstet/postgres-xl,ashwinstar/gpdb,lisakowen/gpdb,xinzweb/gpdb,tpostgres-projects/tPostgres,pavanvd/postgres-xl,ashwinstar/gpdb,pavanvd/postgres-xl,greenplum-db/gpdb,adam8157/gpdb,ashwinstar/gpdb,kmjungersen/PostgresXL,50wu/gpdb,greenplum-db/gpdb,ovr/postgres-xl,jmcatamney/gpdb,jmcatamney/gpdb,arcivanov/postgres-xl,greenplum-db/gpdb,kmjungersen/PostgresXL,50wu/gpdb,yazun/postgres-xl,oberstet/postgres-xl,50wu/gpdb,pavanvd/postgres-xl,pavanvd/postgres-xl,lisakowen/gpdb,zeroae/postgres-xl,zeroae/postgres-xl,lisakowen/gpdb,zeroae/postgres-xl,greenplum-db/gpdb,Postgres-XL/Postgres-XL,Postgres-XL/Postgres-XL,xinzweb/gpdb,techdragon/Postgres-XL,kmjungersen/PostgresXL,greenplum-db/gpdb,ovr/postgres-xl,Postgres-XL/Postgres-XL,yazun/postgres-xl,ashwinstar/gpdb,lisakowen/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,50wu/gpdb,ashwinstar/gpdb,zeroae/postgres-xl,lisakowen/gpdb,ovr/postgres-xl,ashwinstar/gpdb,adam8157/gpdb,50wu/gpdb,snaga/postgres-xl,xinzweb/gpdb,Postgres-XL/Postgres-XL,postmind-net/postgres-xl,50wu/gpdb,oberstet/postgres-xl,xinzweb/gpdb,xinzweb/gpdb,arcivanov/postgres-xl,postmind-net/postgres-xl,lisakowen/gpdb,ashwinstar/gpdb