Temporary hooks for the widgets feature team in dynamic_sidebar() and is_active_sidebar().

props westonruter.
fixes #25368.

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git-svn-id: http://core.svn.wordpress.org/trunk@25497 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use correct variable. props helen. see #17071.

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git-svn-id: http://core.svn.wordpress.org/trunk@25498 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Change 'This post is password protected' to 'This content', for the benefit of custom post types.

props MikeHansenMe.
fixes #23603.

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git-svn-id: http://core.svn.wordpress.org/trunk@25499 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Return false in update_metadata() and update_metadata_by_mid() when the DB query fails.

props leewillis77.
fixes #24933.

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git-svn-id: http://core.svn.wordpress.org/trunk@25500 1a063a9b-81f0-0310-95a4-ce76da25c4cd