Revert 1fbc30f1dca6624c01a9a6a9ff711a7036c68532 because the --enable-shared is about Plyton's configure, not ours.
Revert 1fbc30f1dca6624c01a9a6a9ff711a7036c68532 because the
--enable-shared is about Plyton's configure, not ours.

Postgres-XL/Postgres-XL,xinzweb/gpdb,50wu/gpdb,oberstet/postgres-xl,ovr/postgres-xl,lisakowen/gpdb,jmcatamney/gpdb,lisakowen/gpdb,adam8157/gpdb,techdragon/Postgres-XL,50wu/gpdb,ashwinstar/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,ashwinstar/gpdb,greenplum-db/gpdb,xinzweb/gpdb,oberstet/postgres-xl,lisakowen/gpdb,adam8157/gpdb,zeroae/postgres-xl,greenplum-db/gpdb,50wu/gpdb,50wu/gpdb,xinzweb/gpdb,jmcatamney/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,yazun/postgres-xl,Postgres-XL/Postgres-XL,zeroae/postgres-xl,jmcatamney/gpdb,yazun/postgres-xl,yazun/postgres-xl,oberstet/postgres-xl,pavanvd/postgres-xl,ovr/postgres-xl,adam8157/gpdb,greenplum-db/gpdb,yazun/postgres-xl,greenplum-db/gpdb,pavanvd/postgres-xl,lisakowen/gpdb,Postgres-XL/Postgres-XL,xinzweb/gpdb,50wu/gpdb,xinzweb/gpdb,jmcatamney/gpdb,greenplum-db/gpdb,zeroae/postgres-xl,50wu/gpdb,jmcatamney/gpdb,adam8157/gpdb,lisakowen/gpdb,jmcatamney/gpdb,lisakowen/gpdb,adam8157/gpdb,oberstet/postgres-xl,50wu/gpdb,adam8157/gpdb,oberstet/postgres-xl,adam8157/gpdb,techdragon/Postgres-XL,zeroae/postgres-xl,ovr/postgres-xl,pavanvd/postgres-xl,pavanvd/postgres-xl,jmcatamney/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,greenplum-db/gpdb,pavanvd/postgres-xl,ovr/postgres-xl,ashwinstar/gpdb,ovr/postgres-xl,greenplum-db/gpdb,techdragon/Postgres-XL,zeroae/postgres-xl,xinzweb/gpdb,adam8157/gpdb,jmcatamney/gpdb,techdragon/Postgres-XL,ashwinstar/gpdb,greenplum-db/gpdb,ashwinstar/gpdb,50wu/gpdb,ashwinstar/gpdb,xinzweb/gpdb