PHOENIX-674 Make unit test suite run faster (SamarthJain)
PHOENIX-63 Can't add null value to a secondary indexed table (SamarthJain)
PHOENIX-956 Connection properties ignored (SamarthJain)
PHOENIX-966 Context classloader for Phoenix classes

Temporarily set the current thread's context classloader in calls
that require creating an HBase configuration or accessing Phoenix
coprocessor endpoint classes.
Merge remote branch 'origin/apache-ref/4.0' into champlain
PHOENIX-983 Add timezone offset function

Add a function to retrieve the GMT offset (in minutes) for a given
timezone and point in time.

Signed-off-by: Gabriel Reid <gabrielr@ngdata.com>
Merge remote branch 'origin/apache-ref/4.0' into champlain
PHOENIX-982 Avoid spinning up and tearing down mini cluster in tests (SamarthJain)
PHOENIX-985 performance.py script fails to execute queries
PHOENIX-987 Add missing @Category info to tests
PHOENIX-986 Better err message for CSV import

Supply a more clear error message for the CSV import if the
supplied table name does not match an existing table name.
Merge Apache 4.0
Merge from Apache 4.0