Add a comment explaining the recent fix for plpython breakage in commit 4c966d9.
Add a comment explaining the recent fix for plpython breakage in commit 4c966d9.

Mostly text supplied by Jan Urbański.

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