Fixed #21137 -- Corrected ULRconf include example.

Thanks marfire for the report.
Fixed #18333 - Quoted annotated column names
Revert "Ensure that passwords are never long enough for a DoS."

This reverts commit aae5a96d5754ad34e48b7f673ef2411a3bbc1015.

This fix is no longer necessary, our pbkdf2 (see next commit) implementation
no longer rehashes the password every iteration.
Fixed #21138 -- Increased the performance of our PBKDF2 implementation.

Thanks go to Michael Gebetsroither for pointing out this issue and help on
the patch.
Added '*' to quote_cache

The commit for #18333 missed quote_cache default value for *.
Refs #18333.