3.9.2-alpha

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Constant time for wp_verify_nonce().

Merges [29382] to the 3.9 branch.

Adds a second copy of hash_equals() to pluggable.php in case compat.php is not copied over in an update. (The general goal is no cross-file dependencies for minor releases.)

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Verify the MAC earlier in WP_Customize_Widgets. props duck_.

Merges [29377] (and [29028]) to the 3.9 branch.

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Disable external entities in ID3.

Merges [29378] to the 3.9 branch.

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Don't pass around the password reset key.

Merges [29327] and [29381] to the 3.9 branch.

props mdawaffe.
fixes #29060.

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Escape late in get_avatar().

Merges [29397] to the 3.9 branch.

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