Preparing for further changes.
Issue #2561255 by DamienMcKenna: Fixes for tests.
Issue #2561609 by DamienMcKenna: Fixed wrong function used to load a user object.
Issue #2560911 by mkolar: Regression to custom OAuth path functionality.
Issue #2560585 by DamienMcKenna: Follow-on from #2556611 to fix regression caused by D7 patch being applied to D6 module.
Issue #2163715 by migrad, hideaway, mkolar, DamienMcKenna: Optionally hide the new-user password message.
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