Log Message:
Update to version 2.19.2.  Changes:

Version 2.19.2  Released March 12, 2012
  - Fix errors when multiple same-named placeholders are used. [GSM]
    (CPAN bug #75713)

Version 2.19.1  Released March 10, 2012 (git commit \ 
db6f6da00467c7ea28d32c4df97e93ccc4d38f2b)
  - Fix crash when passing in an array with undefined elements. [GSM]

Version 2.19.0  Released March 9, 2012 (git commit \ 
05ab092905ce6891ed83e173412ee70d6cdb8cb5)
  - Use proper formatting for warn() and croak() (CPAN bug #75642)
    [Niko Tyni]
  - Fix localized regex in test (CPAN bug #70759)
  - Fix for named placeholders (CPAN bug #70953) [Jan Pazdziora]
  - Various fixes to the array-marshalling code [Noah Misch, Mark
    Stosberg, and David Christensen] (CPAN bug #58552)
  - Allow hi-bit chars in dollar-quoted identifiers
    [David Christensen] (CPAN bug #73832)
  - Have do() return count for things such as CREATE TABLE .. AS SELECT
    Will only work on 9.0 or better. (CPAN bug #71073) [Pavel Stehule]
  - Better error message when trying to do things post-disconnect [GSM]
  - Always respect pg_server_prepare=0 by using PQexec not PQexecParams. [GSM]
  - Fix error in async docs (CPAN bug #72812)
  - Switch from subversion to git.
    git clone git://bucardo.org/dbdpg.git [GSM]