Remove unnecessary --with-includes from configure line in "official" build.
Remove unnecessary --with-includes from configure line in "official" build.

The output from the Concourse pipeline actually threw warnings, saying
that these directories don't exist. We extract the tarball directly into
the "ext" directory, which is in the include path already, so these are
unnecessary.

ashwinstar/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,janebeckman/gpdb,lisakowen/gpdb,50wu/gpdb,Quikling/gpdb,xinzweb/gpdb,yuanzhao/gpdb,Chibin/gpdb,jmcatamney/gpdb,rvs/gpdb,Quikling/gpdb,adam8157/gpdb,greenplum-db/gpdb,Chibin/gpdb,Quikling/gpdb,adam8157/gpdb,janebeckman/gpdb,rvs/gpdb,kaknikhil/gpdb,Chibin/gpdb,rvs/gpdb,rvs/gpdb,kaknikhil/gpdb,janebeckman/gpdb,Quikling/gpdb,edespino/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,lintzc/gpdb,janebeckman/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,50wu/gpdb,cjcjameson/gpdb,lintzc/gpdb,janebeckman/gpdb,edespino/gpdb,janebeckman/gpdb,rvs/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,adam8157/gpdb,kaknikhil/gpdb,50wu/gpdb,edespino/gpdb,Chibin/gpdb,xinzweb/gpdb,edespino/gpdb,lintzc/gpdb,Chibin/gpdb,Chibin/gpdb,adam8157/gpdb,xinzweb/gpdb,rvs/gpdb,xinzweb/gpdb,lisakowen/gpdb,yuanzhao/gpdb,lintzc/gpdb,Quikling/gpdb,edespino/gpdb,ashwinstar/gpdb,xinzweb/gpdb,greenplum-db/gpdb,edespino/gpdb,rvs/gpdb,ashwinstar/gpdb,kaknikhil/gpdb,lisakowen/gpdb,lisakowen/gpdb,yuanzhao/gpdb,50wu/gpdb,50wu/gpdb,lisakowen/gpdb,jmcatamney/gpdb,janebeckman/gpdb,cjcjameson/gpdb,jmcatamney/gpdb,yuanzhao/gpdb,rvs/gpdb,cjcjameson/gpdb,lisakowen/gpdb,Quikling/gpdb,adam8157/gpdb,edespino/gpdb,Quikling/gpdb,lintzc/gpdb,edespino/gpdb,lintzc/gpdb,janebeckman/gpdb,Chibin/gpdb,Quikling/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,edespino/gpdb,Chibin/gpdb,janebeckman/gpdb,lintzc/gpdb,jmcatamney/gpdb,Chibin/gpdb,rvs/gpdb,janebeckman/gpdb,lintzc/gpdb,greenplum-db/gpdb,50wu/gpdb,Quikling/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,rvs/gpdb,xinzweb/gpdb,yuanzhao/gpdb,lisakowen/gpdb,kaknikhil/gpdb,kaknikhil/gpdb,Quikling/gpdb,xinzweb/gpdb,adam8157/gpdb,kaknikhil/gpdb,adam8157/gpdb,cjcjameson/gpdb,50wu/gpdb,lisakowen/gpdb,xinzweb/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,edespino/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,adam8157/gpdb,50wu/gpdb,lintzc/gpdb,Chibin/gpdb,yuanzhao/gpdb,greenplum-db/gpdb,cjcjameson/gpdb