westi b36db5619b Switch to is_callable instead of function_exists to allow for class based importer plugins. Fixes #4614 ...

git-svn-id: http://svn.automattic.com/wordpress/trunk@6113 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2007-09-13 20:36:31 +00:00

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