PDO 1.0RC1

I spent pretty much all day working through the outstanding PDO bugs listed on bugs.php.net and pecl.php.net. There are now no known problems with any of the main-stream drivers, so I've bumped the version numbers up to 1.0RC1 and released them via PECL (ODBC and OCI package releases are pending build/install tests).

Please make the effort to download and use them so that we can catch any remaining bugs; we're getting very close to PHP 5.1 stable, and I really want you to catch any problems with the way that you use it before the release date, rather than the day after.

I've also been fleshing out the PDO docs in the PHP online manual; those changes will be picked up when it is next built and pushed to the mirrors.