Test failures for 5.4

A pretty interface to see test failures and their diffs can be found at http://qa.php.net/reports/

Testing register_shutdown_function() with timeout. (Bug: #21513) [tests/func/005a.phpt]
Timeout again inside register_shutdown_function [tests/lang/045.phpt]
Bug #28220 (mb_strwidth() returns wrong width values for some Hangul characters) [ext/mbstring/tests/bug28220.phpt]
Bug #49536 (mb_detect_encoding() returns incorrect results when strict_mode is turned on) [ext/mbstring/tests/bug49536.phpt]
Unicode standard conformance test (ill-formed UTF sequences.) [ext/mbstring/tests/illformed_utf_sequences.phpt]
Test mb_internal_encoding() function : usage variations - Test different encodings [ext/mbstring/tests/mb_internal_encoding_variation2.phpt]
mysql connect [ext/mysql/tests/001.phpt]
mysql_connect() [ext/mysql/tests/mysql_connect.phpt]
mysql_[p]connect() - max_links/max_persistent [ext/mysql/tests/mysql_max_links.phpt]
mysqli_connect() [ext/mysqli/tests/mysqli_connect.phpt]
new mysqli() [ext/mysqli/tests/mysqli_connect_oo.phpt]
new mysqli() [ext/mysqli/tests/mysqli_connect_oo_defaults.phpt]
MySQL PDO->__construct(), options [ext/pdo_mysql/tests/pdo_mysql___construct_options.phpt]
MySQL PDO->__construct(), libmysql only options [ext/pdo_mysql/tests/pdo_mysql___construct_options_libmysql.phpt]
MySQL PDO class interface [ext/pdo_mysql/tests/pdo_mysql_interface.phpt]
Sort with SORT_LOCALE_STRING [ext/standard/tests/array/locale_sort.phpt]