Supress convertion of zero hours to '12' for intervals when using to_char with HH, e.g.
Supress convertion of zero hours to '12' for intervals when using
to_char with HH, e.g.

	to_char(interval '0d 0h 12m 44s', 'DD HH24 MI SS');

now returns:

	 00 00 12 44

not:

	 00 12 12 44

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