Update to 0.771

Upstream changes:
0.771 (08.04.2013) - John Siracusa <siracusa@gmail.com>

    * Documented the behavior of the dsn attribute when it has an explicit
      value and attributes that contribute to the dsn are also set (RT 87487)

0.770 (11.24.2012) - John Siracusa <siracusa@gmail.com>

    * Fixed "DBD::Informix::st execute failed: SQL: -255: Not in transaction"
      errors in the test suite.  (Patch by Sergey Leschenko.)

0.769 (05.25.2012) - John Siracusa <siracusa@gmail.com>

    * Fixed (more) test failures due to DBD::SQLite not being installed.

0.768 (05.12.2012) - John Siracusa <siracusa@gmail.com>

    * Fixed test failures due to DBD::SQLite not being installed.

0.767 (05.01.2012) - John Siracusa <siracusa@gmail.com>

    * Fixed some bugs that could cause connect_options not to be honored.
    * Fixed some incorrectly failing handle_error tests.
    * Updated Rose::DB::Oracle to honor NLS_*_FORMAT environment variables
      for dates.

(wen)