[imp] removed IMP::preambleString() .

[Marcus I. Ryan]

Oh, and a couple more quick "forehead smackers" - make sure you updated
all of IMP, Horde, etc., and that you added back the preambleString() in
actions.inc.  If you didn't add it back, didn't delete the file before
updating, and/or didn't get a full new clean CVS checkout, your modified
file will likely remain modified.

-- 
Marcus I. Ryan, marcus@riboflavin.net
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 "Love is a snowmobile racing across the tundra and then suddenly it
 flips over, pinning you underneath.  At night, the ice weasels come."
                 -- Matt Groening
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