Update twentyten and twentyeleven to new-style header and background support

[sabreuse]

#20249 deprecates add_custom_image_header() and add_custom_background() in favor of add_theme_support. This patch updates the bundled themes to the new style.

[toscho]

add_image_size( get_theme_support( 'custom-header', 'width' ), get_theme_support( 'custom-header', 'height' ), true );

Shouldn’t that be:

add_image_size( 
    'large-feature', 
    get_theme_support( 'custom-header', 'width' ), 
    get_theme_support( 'custom-header', 'height' ), 
    true 
);

The 'random-default' parameter values are wrong: It should be false in TwentyTen and true in TwentyEleven.

[sabreuse]

toscho, thanks for catching those: errors corrected in 20265.2.diff

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[20221]

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In [20222]:

Update twentyeleven/functions.php to use the new add_theme_support() calls for backgrounds and headers. props sabreuse for initial patch. see #20265. see #20249.

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In [20223]:

Remove use of HEADER_IMAGE_WIDTH and HEADER_IMAGE_HEIGHT from twentyeleven/header.php. see #20265.

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In [20225]:

Move Twenty Ten and the rest of Twenty Eleven to add_theme_support() for headers and backgrounds. props sabreuse for initial patch. fixes #20265. see #20249.

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In [20226]:

Remove unused variable. see #20265.