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Noteable changes: - The `magic_quotes_runtime` and `magic_quotes_sybase` settings were removed in PHP 5.4, so no longer need to be set. - Some functions that use external libraries can generate errors that can't be tested for, so are globally allowed to silence errors. - Quite a few functions would cause errors if `safe_mode` was set. This setting was removed in PHP 5.4. - Only a handful of `header()` calls needed corresponding `headers_sent()` checks for unit tests to pass, but more may need to be added as the nightlies builds are tested. See #46732. git-svn-id: https://develop.svn.wordpress.org/trunk@45611 602fd350-edb4-49c9-b593-d223f7449a82