Summary:
Whenever we add new tests in db_sanity_test.cc, the verification test
will fail since the old version db_sanity_test.cc does not have the
newly added test. This patch makes auto_sanity_test.sh always use
the db_sanity_test.cc of the newer commit.
As a result, a macro guard is added to allow db_sanity_test.cc to be
backward compatible.
Test Plan: tools/auto_sanity_check.sh
Reviewers: sdong, rven, igor
Reviewed By: igor
Subscribers: dhruba, leveldb
Differential Revision: https://reviews.facebook.net/D35997
cfa576402c