IMPALA-245: day() function returns wrong result

Changes day() to return same result as dayofmonth() and adds dayofyear().
IMPALA-67: Constant SELECT clauses do not work in subqueries.
Fix version checking error
IMPALA-227: SELECT * on partitioned table returns columns in different order than Hive.
IMPALA-253: Return query errors in CloseInsertInternal
Fix parquet hang
Bump version to .7.1
Implicit commands run by the shell should be delimited properly
fix for IMPALA-90/IMPALA-221
IMPALA-236: impalad segfaults executing query that contains join and limit
IMPALA-231 fix hbase perf issue by deleteing local java ref
IMPALA-56 - explicitly close query executor
Fixed a failed Preconditions check if a join predicate has constants.
IMPALA-234: Add some library version validation logic to impalad when loading impala-lzo shared library
IMPALA-262: Querying text/lzo table that is not indexed causes an impalad segfault
remove duplicate merge-node.cc in CMakeLists
Add io mgr warning for machines without sse4_2.
IMPALA-285: Multiple outer joins with nesting crash impalad
IMPALA-84: Predicates not evaluated if select exprs are constant.
IMPALA-287: Full outer join is missing results.