Another #if SQLITE_VERSION_NUMBER macro in speedtest1.c for compatibility
with older versions of SQLite.
Fix a harmless compiler warning on MacOS.
Change some unreachable test conditions to NEVER().
Add a "database_may_be_corrupt" directive to test file fuzz3.test. Reformat an assert() statement in vdbeaux.c to make its intent clearer.
Remove an unnecessary branch from the UPDATE logic - one that was also
unreachable except following an OOM on x64.
Modify test file conflict2.test so that it works with the "inmemory_journal" permutation.