- [bug] Adjusted a very old bugfix which attempted

- [bug] Adjusted a very old bugfix which attempted
    to work around a SQLite issue that itself was
    "fixed" as of sqlite 3.6.14, regarding quotes
    surrounding a table name when using
    the "foreign_key_list" pragma.  The fix has been
    adjusted to not interfere with quotes that
    are *actually in the name* of a column or table,
    to as much a degree as possible; sqlite still
    doesn't return the correct result for foreign_key_list()
    if the target table actually has quotes surrounding
    its name, as *part* of its name (i.e. """mytable""").
    [ticket:2568]