This patch reserves SQL:2016 reserved words, excluding:
1. Impala builtin function names.
2. Time unit words(year, month, etc.).
3. An exception list based on a discussion.
Some test cases are modified to avoid these words. A impalad and
catalogd startup option reserved_words_version is added. The words are
reserved if the option is set to "3.0.0".
Change-Id: If1b295e6a77e840cf1b794c2eb73e1b9d2b8ddd6
Reviewed-on: http://gerrit.cloudera.org:8080/9096
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
Reviewed-by: Philip Zeyliger <philip@cloudera.com>
Tested-by: Impala Public Jenkins
