Revert "Clean up headers."
Revert "Clean up headers."

This reverts commit 916ea3391861313edb75c0ce496cd612f2caa445.

lisakowen/gpdb,Chibin/gpdb,jmcatamney/gpdb,50wu/gpdb,50wu/gpdb,greenplum-db/gpdb,Chibin/gpdb,Chibin/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,adam8157/gpdb,yuanzhao/gpdb,lisakowen/gpdb,xinzweb/gpdb,lisakowen/gpdb,greenplum-db/gpdb,greenplum-db/gpdb,yuanzhao/gpdb,adam8157/gpdb,ashwinstar/gpdb,edespino/gpdb,edespino/gpdb,adam8157/gpdb,greenplum-db/gpdb,edespino/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,adam8157/gpdb,yuanzhao/gpdb,yuanzhao/gpdb,50wu/gpdb,ashwinstar/gpdb,edespino/gpdb,adam8157/gpdb,adam8157/gpdb,Chibin/gpdb,jmcatamney/gpdb,50wu/gpdb,xinzweb/gpdb,xinzweb/gpdb,lisakowen/gpdb,Chibin/gpdb,edespino/gpdb,jmcatamney/gpdb,jmcatamney/gpdb,50wu/gpdb,edespino/gpdb,ashwinstar/gpdb,yuanzhao/gpdb,lisakowen/gpdb,lisakowen/gpdb,edespino/gpdb,Chibin/gpdb,greenplum-db/gpdb,xinzweb/gpdb,yuanzhao/gpdb,Chibin/gpdb,edespino/gpdb,yuanzhao/gpdb,Chibin/gpdb,edespino/gpdb,greenplum-db/gpdb,lisakowen/gpdb,xinzweb/gpdb,50wu/gpdb,lisakowen/gpdb,yuanzhao/gpdb,50wu/gpdb,adam8157/gpdb,ashwinstar/gpdb,50wu/gpdb,Chibin/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,Chibin/gpdb,ashwinstar/gpdb,jmcatamney/gpdb,xinzweb/gpdb,jmcatamney/gpdb,xinzweb/gpdb,edespino/gpdb,adam8157/gpdb,greenplum-db/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,xinzweb/gpdb