- Patch #1076414 by wojtha, c960657: Openid discovery - OpenID v1 OP service with lower priority is chosen instead OpenID v2 Claimed id service.

- Patch #488062 by catch, walkah, spiderman, paul.lovvik, klausi: speed up OpenID by using GMP instead of BCMath if available.

- Patch #740036 by c960657, Damien Tournoud: Fixed OpenID AX: Request nickname + support alternative namespaces.

- Patch #727650 by Damien Tournoud, c960657: rolled back support for Google-specific OpenID discovery protocol.

- Patch #348448 by mfb, c960657, marvil07, cdale, jpmckinney: fixed PHP strict warnings when running tests and for PHP 5.3.

- Patch #740036 by c960657, Damien Tournoud: OpenID AX: Request nickname + support alternative namespaces.

- Patch #727650 by Damien Tournoud: made OpenID more pluggable so we can extend it in contrib, and added support for Google's OpenID discovery protocol.

- Patch #634562 by vgarvardt, Damien Tournoud: added OpenID AX support (in addition to SREF) so that we can extend our OpenID implementation in contrib.

- Patch #579448 by c960657: fixed OpenID specification violation. Search for OP Identifier element to authenticate.

- Patch #601570 by effulgentsia: hook_exit() and other cleanup needs to happen for AJAX requests too.

before a form builder function, to facilitate common form elements. Clean-up
from form_builder changes from CTools patch. Has nice side-benefit of making
all form functions' signatures consistent.

- Patch #302632 by recidive, c960657: use PHP5 functionality for _openid_sha1().  Simplified some code.

- Patch #245115 by kkaefer, John Morahan, JohnAlbin et al: after a long discussion we've decided to make the concatenation operator consistent with the other operators.

#216022 reported by johnnysxip, patch by walkah: (SA-2008-016) OpenID - Incorrect claimed_id returned for OpenID 2.0 and other minor OpenID 2.0 compliance fixes

- Patch #193800 by jp.stacey: OpenID service discovery confused by newlines within meta or link tags.