[2/4] incubator-hawq git commit: HAWQ-918. Fix memtuple forming bug when null-saved size is larger than 32763 bytes

[wlin]

http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/4ad3a6d1/src/test/regress/known_good_schedule
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diff --git a/src/test/regress/known_good_schedule 
b/src/test/regress/known_good_schedule
index 1f95e49..a402997 100755
--- a/src/test/regress/known_good_schedule
+++ b/src/test/regress/known_good_schedule
@@ -68,6 +68,7 @@ ignore: triggers
 ignore: create_misc
 test: create_aggregate
 test: aggregate_with_groupingsets
+test: aggregates_null
 test: nested_case_null
 ignore: create_operator
 ignore: create_index